Home / 28,760,928.80-39,690,941.22-15,708,803.45

Finding the Fourth Proportional to 28,760,928.80, 39,690,941.22 and 15,708,803.45

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Solution

The fourth proportional to 28,760,928.80, 39,690,941.22 and 15,708,803.45 is: 21,678,618.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,760,928.80 : 39,690,941.22 = 15,708,803.45 : x
  2. Step 2: Convert to fraction form
    28,760,928.80/39,690,941.22 = 15,708,803.45/x
  3. Step 3: Cross multiply
    28,760,928.80x = 39,690,941.22 × 15,708,803.45
  4. Step 4: Simplify right side
    28,760,928.80x = 623,497,194,172,028.50
  5. Step 5: Solve for x
    x = 623,497,194,172,028.50/28,760,928.80
  6. Step 6: Final answer
    x = 21,678,618.19

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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.