Home / 21,257,856,176.80-31,886,784,265.20-11,339,891,658.40

Finding the Fourth Proportional to 21,257,856,176.80, 31,886,784,265.20 and 11,339,891,658.40

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Solution

The fourth proportional to 21,257,856,176.80, 31,886,784,265.20 and 11,339,891,658.40 is: 17,009,837,487.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,257,856,176.80 : 31,886,784,265.20 = 11,339,891,658.40 : x
  2. Step 2: Convert to fraction form
    21,257,856,176.80/31,886,784,265.20 = 11,339,891,658.40/x
  3. Step 3: Cross multiply
    21,257,856,176.80x = 31,886,784,265.20 × 11,339,891,658.40
  4. Step 4: Simplify right side
    21,257,856,176.80x = 361,592,678,902,141,878,272
  5. Step 5: Solve for x
    x = 361,592,678,902,141,878,272/21,257,856,176.80
  6. Step 6: Final answer
    x = 17,009,837,487.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.