Home / 21,031,636.80-31,547,455.20-11,961,710.40

Finding the Fourth Proportional to 21,031,636.80, 31,547,455.20 and 11,961,710.40

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Solution

The fourth proportional to 21,031,636.80, 31,547,455.20 and 11,961,710.40 is: 17,942,565.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,031,636.80 : 31,547,455.20 = 11,961,710.40 : x
  2. Step 2: Convert to fraction form
    21,031,636.80/31,547,455.20 = 11,961,710.40/x
  3. Step 3: Cross multiply
    21,031,636.80x = 31,547,455.20 × 11,961,710.40
  4. Step 4: Simplify right side
    21,031,636.80x = 377,361,522,959,374.06
  5. Step 5: Solve for x
    x = 377,361,522,959,374.06/21,031,636.80
  6. Step 6: Final answer
    x = 17,942,565.60

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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.