Home / 20,387,660.32-28,130,892.48-11,688,561.52

Finding the Fourth Proportional to 20,387,660.32, 28,130,892.48 and 11,688,561.52

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Solution

The fourth proportional to 20,387,660.32, 28,130,892.48 and 11,688,561.52 is: 16,127,876.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,387,660.32 : 28,130,892.48 = 11,688,561.52 : x
  2. Step 2: Convert to fraction form
    20,387,660.32/28,130,892.48 = 11,688,561.52/x
  3. Step 3: Cross multiply
    20,387,660.32x = 28,130,892.48 × 11,688,561.52
  4. Step 4: Simplify right side
    20,387,660.32x = 328,809,667,364,985.38
  5. Step 5: Solve for x
    x = 328,809,667,364,985.38/20,387,660.32
  6. Step 6: Final answer
    x = 16,127,876.48

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.