Home / 28,501.12-39,331.43-15,925.87

Finding the Fourth Proportional to 28,501.12, 39,331.43 and 15,925.87

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Solution

The fourth proportional to 28,501.12, 39,331.43 and 15,925.87 is: 21,977.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,501.12 : 39,331.43 = 15,925.87 : x
  2. Step 2: Convert to fraction form
    28,501.12/39,331.43 = 15,925.87/x
  3. Step 3: Cross multiply
    28,501.12x = 39,331.43 × 15,925.87
  4. Step 4: Simplify right side
    28,501.12x = 626,387,161.46
  5. Step 5: Solve for x
    x = 626,387,161.46/28,501.12
  6. Step 6: Final answer
    x = 21,977.63

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1.5x scale

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.