Home / 28,250.40-38,985.57-15,675.15

Finding the Fourth Proportional to 28,250.40, 38,985.57 and 15,675.15

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Solution

The fourth proportional to 28,250.40, 38,985.57 and 15,675.15 is: 21,631.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,250.40 : 38,985.57 = 15,675.15 : x
  2. Step 2: Convert to fraction form
    28,250.40/38,985.57 = 15,675.15/x
  3. Step 3: Cross multiply
    28,250.40x = 38,985.57 × 15,675.15
  4. Step 4: Simplify right side
    28,250.40x = 611,104,657.59
  5. Step 5: Solve for x
    x = 611,104,657.59/28,250.40
  6. Step 6: Final answer
    x = 21,631.72

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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.