Home / 20,123,999.80-30,185,999.70-15,085,151.80

Finding the Fourth Proportional to 20,123,999.80, 30,185,999.70 and 15,085,151.80

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Solution

The fourth proportional to 20,123,999.80, 30,185,999.70 and 15,085,151.80 is: 22,627,727.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,123,999.80 : 30,185,999.70 = 15,085,151.80 : x
  2. Step 2: Convert to fraction form
    20,123,999.80/30,185,999.70 = 15,085,151.80/x
  3. Step 3: Cross multiply
    20,123,999.80x = 30,185,999.70 × 15,085,151.80
  4. Step 4: Simplify right side
    20,123,999.80x = 455,360,387,709,254.50
  5. Step 5: Solve for x
    x = 455,360,387,709,254.50/20,123,999.80
  6. Step 6: Final answer
    x = 22,627,727.70

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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.