Home / 15,074.40-20,812.96-9,417.76

Finding the Fourth Proportional to 15,074.40, 20,812.96 and 9,417.76

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Solution

The fourth proportional to 15,074.40, 20,812.96 and 9,417.76 is: 13,002.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,074.40 : 20,812.96 = 9,417.76 : x
  2. Step 2: Convert to fraction form
    15,074.40/20,812.96 = 9,417.76/x
  3. Step 3: Cross multiply
    15,074.40x = 20,812.96 × 9,417.76
  4. Step 4: Simplify right side
    15,074.40x = 196,011,462.17
  5. Step 5: Solve for x
    x = 196,011,462.17/15,074.40
  6. Step 6: Final answer
    x = 13,002.94

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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.