Home / 28,177.75-38,885.30-15,602.50

Finding the Fourth Proportional to 28,177.75, 38,885.30 and 15,602.50

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Solution

The fourth proportional to 28,177.75, 38,885.30 and 15,602.50 is: 21,531.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,177.75 : 38,885.30 = 15,602.50 : x
  2. Step 2: Convert to fraction form
    28,177.75/38,885.30 = 15,602.50/x
  3. Step 3: Cross multiply
    28,177.75x = 38,885.30 × 15,602.50
  4. Step 4: Simplify right side
    28,177.75x = 606,707,815.24
  5. Step 5: Solve for x
    x = 606,707,815.24/28,177.75
  6. Step 6: Final answer
    x = 21,531.45

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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.