Home / 28,918,938.44-39,908,542.20-15,865,960.16

Finding the Fourth Proportional to 28,918,938.44, 39,908,542.20 and 15,865,960.16

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Solution

The fourth proportional to 28,918,938.44, 39,908,542.20 and 15,865,960.16 is: 21,895,248.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,918,938.44 : 39,908,542.20 = 15,865,960.16 : x
  2. Step 2: Convert to fraction form
    28,918,938.44/39,908,542.20 = 15,865,960.16/x
  3. Step 3: Cross multiply
    28,918,938.44x = 39,908,542.20 × 15,865,960.16
  4. Step 4: Simplify right side
    28,918,938.44x = 633,187,340,588,878.75
  5. Step 5: Solve for x
    x = 633,187,340,588,878.75/28,918,938.44
  6. Step 6: Final answer
    x = 21,895,248.40

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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.