Home / 28,331.56-39,098.06-15,756.31

Finding the Fourth Proportional to 28,331.56, 39,098.06 and 15,756.31

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Solution

The fourth proportional to 28,331.56, 39,098.06 and 15,756.31 is: 21,743.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,331.56 : 39,098.06 = 15,756.31 : x
  2. Step 2: Convert to fraction form
    28,331.56/39,098.06 = 15,756.31/x
  3. Step 3: Cross multiply
    28,331.56x = 39,098.06 × 15,756.31
  4. Step 4: Simplify right side
    28,331.56x = 616,041,153.76
  5. Step 5: Solve for x
    x = 616,041,153.76/28,331.56
  6. Step 6: Final answer
    x = 21,743.99

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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.