Home / 21,250.50-31,875.74-10,123.47

Finding the Fourth Proportional to 21,250.50, 31,875.74 and 10,123.47

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Solution

The fourth proportional to 21,250.50, 31,875.74 and 10,123.47 is: 15,185.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,250.50 : 31,875.74 = 10,123.47 : x
  2. Step 2: Convert to fraction form
    21,250.50/31,875.74 = 10,123.47/x
  3. Step 3: Cross multiply
    21,250.50x = 31,875.74 × 10,123.47
  4. Step 4: Simplify right side
    21,250.50x = 322,693,047.00
  5. Step 5: Solve for x
    x = 322,693,047.00/21,250.50
  6. Step 6: Final answer
    x = 15,185.20

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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.