Home / 21,000,521.40-31,500,782.10-15,260,958.60

Finding the Fourth Proportional to 21,000,521.40, 31,500,782.10 and 15,260,958.60

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Solution

The fourth proportional to 21,000,521.40, 31,500,782.10 and 15,260,958.60 is: 22,891,437.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,000,521.40 : 31,500,782.10 = 15,260,958.60 : x
  2. Step 2: Convert to fraction form
    21,000,521.40/31,500,782.10 = 15,260,958.60/x
  3. Step 3: Cross multiply
    21,000,521.40x = 31,500,782.10 × 15,260,958.60
  4. Step 4: Simplify right side
    21,000,521.40x = 480,732,131,495,721.06
  5. Step 5: Solve for x
    x = 480,732,131,495,721.06/21,000,521.40
  6. Step 6: Final answer
    x = 22,891,437.90

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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.