Home / 15,529.12-21,427.34-9,157.71

Finding the Fourth Proportional to 15,529.12, 21,427.34 and 9,157.71

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Solution

The fourth proportional to 15,529.12, 21,427.34 and 9,157.71 is: 12,635.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,529.12 : 21,427.34 = 9,157.71 : x
  2. Step 2: Convert to fraction form
    15,529.12/21,427.34 = 9,157.71/x
  3. Step 3: Cross multiply
    15,529.12x = 21,427.34 × 9,157.71
  4. Step 4: Simplify right side
    15,529.12x = 196,225,279.83
  5. Step 5: Solve for x
    x = 196,225,279.83/15,529.12
  6. Step 6: Final answer
    x = 12,635.96

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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.