Home / 28,637.15-42,938.45-12,839.31

Finding the Fourth Proportional to 28,637.15, 42,938.45 and 12,839.31

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Solution

The fourth proportional to 28,637.15, 42,938.45 and 12,839.31 is: 19,251.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,637.15 : 42,938.45 = 12,839.31 : x
  2. Step 2: Convert to fraction form
    28,637.15/42,938.45 = 12,839.31/x
  3. Step 3: Cross multiply
    28,637.15x = 42,938.45 × 12,839.31
  4. Step 4: Simplify right side
    28,637.15x = 551,300,006.27
  5. Step 5: Solve for x
    x = 551,300,006.27/28,637.15
  6. Step 6: Final answer
    x = 19,251.22

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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.