Home / 28,211.04-38,931.24-15,635.76

Finding the Fourth Proportional to 28,211.04, 38,931.24 and 15,635.76

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Solution

The fourth proportional to 28,211.04, 38,931.24 and 15,635.76 is: 21,577.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,211.04 : 38,931.24 = 15,635.76 : x
  2. Step 2: Convert to fraction form
    28,211.04/38,931.24 = 15,635.76/x
  3. Step 3: Cross multiply
    28,211.04x = 38,931.24 × 15,635.76
  4. Step 4: Simplify right side
    28,211.04x = 608,719,525.14
  5. Step 5: Solve for x
    x = 608,719,525.14/28,211.04
  6. Step 6: Final answer
    x = 21,577.35

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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.