Home / 28,211.18-38,931.45-15,635.93

Finding the Fourth Proportional to 28,211.18, 38,931.45 and 15,635.93

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Solution

The fourth proportional to 28,211.18, 38,931.45 and 15,635.93 is: 21,577.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,211.18 : 38,931.45 = 15,635.93 : x
  2. Step 2: Convert to fraction form
    28,211.18/38,931.45 = 15,635.93/x
  3. Step 3: Cross multiply
    28,211.18x = 38,931.45 × 15,635.93
  4. Step 4: Simplify right side
    28,211.18x = 608,729,427.00
  5. Step 5: Solve for x
    x = 608,729,427.00/28,211.18
  6. Step 6: Final answer
    x = 21,577.60

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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.