Home / 28,251.18-38,985.30-15,675.66

Finding the Fourth Proportional to 28,251.18, 38,985.30 and 15,675.66

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Solution

The fourth proportional to 28,251.18, 38,985.30 and 15,675.66 is: 21,631.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,251.18 : 38,985.30 = 15,675.66 : x
  2. Step 2: Convert to fraction form
    28,251.18/38,985.30 = 15,675.66/x
  3. Step 3: Cross multiply
    28,251.18x = 38,985.30 × 15,675.66
  4. Step 4: Simplify right side
    28,251.18x = 611,120,307.80
  5. Step 5: Solve for x
    x = 611,120,307.80/28,251.18
  6. Step 6: Final answer
    x = 21,631.67

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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.