Home / 15,534.42-21,437.56-8,820.19

Finding the Fourth Proportional to 15,534.42, 21,437.56 and 8,820.19

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Solution

The fourth proportional to 15,534.42, 21,437.56 and 8,820.19 is: 12,171.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,534.42 : 21,437.56 = 8,820.19 : x
  2. Step 2: Convert to fraction form
    15,534.42/21,437.56 = 8,820.19/x
  3. Step 3: Cross multiply
    15,534.42x = 21,437.56 × 8,820.19
  4. Step 4: Simplify right side
    15,534.42x = 189,083,390.16
  5. Step 5: Solve for x
    x = 189,083,390.16/15,534.42
  6. Step 6: Final answer
    x = 12,171.90

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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.