Home / 15,419.04-21,277.12-9,129.12

Finding the Fourth Proportional to 15,419.04, 21,277.12 and 9,129.12

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Solution

The fourth proportional to 15,419.04, 21,277.12 and 9,129.12 is: 12,597.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,419.04 : 21,277.12 = 9,129.12 : x
  2. Step 2: Convert to fraction form
    15,419.04/21,277.12 = 9,129.12/x
  3. Step 3: Cross multiply
    15,419.04x = 21,277.12 × 9,129.12
  4. Step 4: Simplify right side
    15,419.04x = 194,241,381.73
  5. Step 5: Solve for x
    x = 194,241,381.73/15,419.04
  6. Step 6: Final answer
    x = 12,597.50

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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.