Home / 28,132.70-38,817.51-15,555.02

Finding the Fourth Proportional to 28,132.70, 38,817.51 and 15,555.02

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Solution

The fourth proportional to 28,132.70, 38,817.51 and 15,555.02 is: 21,462.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,132.70 : 38,817.51 = 15,555.02 : x
  2. Step 2: Convert to fraction form
    28,132.70/38,817.51 = 15,555.02/x
  3. Step 3: Cross multiply
    28,132.70x = 38,817.51 × 15,555.02
  4. Step 4: Simplify right side
    28,132.70x = 603,807,144.40
  5. Step 5: Solve for x
    x = 603,807,144.40/28,132.70
  6. Step 6: Final answer
    x = 21,462.82

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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.