Home / 10,421.28-15,634.08-4,577.76

Finding the Fourth Proportional to 10,421.28, 15,634.08 and 4,577.76

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Solution

The fourth proportional to 10,421.28, 15,634.08 and 4,577.76 is: 6,867.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,421.28 : 15,634.08 = 4,577.76 : x
  2. Step 2: Convert to fraction form
    10,421.28/15,634.08 = 4,577.76/x
  3. Step 3: Cross multiply
    10,421.28x = 15,634.08 × 4,577.76
  4. Step 4: Simplify right side
    10,421.28x = 71,569,066.06
  5. Step 5: Solve for x
    x = 71,569,066.06/10,421.28
  6. Step 6: Final answer
    x = 6,867.59

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.