Home / 20,725,412.80-31,088,119.20-15,085,220.80

Finding the Fourth Proportional to 20,725,412.80, 31,088,119.20 and 15,085,220.80

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Solution

The fourth proportional to 20,725,412.80, 31,088,119.20 and 15,085,220.80 is: 22,627,831.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,725,412.80 : 31,088,119.20 = 15,085,220.80 : x
  2. Step 2: Convert to fraction form
    20,725,412.80/31,088,119.20 = 15,085,220.80/x
  3. Step 3: Cross multiply
    20,725,412.80x = 31,088,119.20 × 15,085,220.80
  4. Step 4: Simplify right side
    20,725,412.80x = 468,971,142,388,719.38
  5. Step 5: Solve for x
    x = 468,971,142,388,719.38/20,725,412.80
  6. Step 6: Final answer
    x = 22,627,831.20

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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.