Home / 15,534.28-21,437.34-8,460.64

Finding the Fourth Proportional to 15,534.28, 21,437.34 and 8,460.64

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Solution

The fourth proportional to 15,534.28, 21,437.34 and 8,460.64 is: 11,675.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,534.28 : 21,437.34 = 8,460.64 : x
  2. Step 2: Convert to fraction form
    15,534.28/21,437.34 = 8,460.64/x
  3. Step 3: Cross multiply
    15,534.28x = 21,437.34 × 8,460.64
  4. Step 4: Simplify right side
    15,534.28x = 181,373,616.30
  5. Step 5: Solve for x
    x = 181,373,616.30/15,534.28
  6. Step 6: Final answer
    x = 11,675.70

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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.