Home / 20,740,172.80-31,110,259.20-13,142,502.40

Finding the Fourth Proportional to 20,740,172.80, 31,110,259.20 and 13,142,502.40

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Solution

The fourth proportional to 20,740,172.80, 31,110,259.20 and 13,142,502.40 is: 19,713,753.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,740,172.80 : 31,110,259.20 = 13,142,502.40 : x
  2. Step 2: Convert to fraction form
    20,740,172.80/31,110,259.20 = 13,142,502.40/x
  3. Step 3: Cross multiply
    20,740,172.80x = 31,110,259.20 × 13,142,502.40
  4. Step 4: Simplify right side
    20,740,172.80x = 408,866,656,200,622.06
  5. Step 5: Solve for x
    x = 408,866,656,200,622.06/20,740,172.80
  6. Step 6: Final answer
    x = 19,713,753.60

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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.