Home / 13,419.17-20,128.80-4,654.10

Finding the Fourth Proportional to 13,419.17, 20,128.80 and 4,654.10

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Solution

The fourth proportional to 13,419.17, 20,128.80 and 4,654.10 is: 6,981.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,419.17 : 20,128.80 = 4,654.10 : x
  2. Step 2: Convert to fraction form
    13,419.17/20,128.80 = 4,654.10/x
  3. Step 3: Cross multiply
    13,419.17x = 20,128.80 × 4,654.10
  4. Step 4: Simplify right side
    13,419.17x = 93,681,448.08
  5. Step 5: Solve for x
    x = 93,681,448.08/13,419.17
  6. Step 6: Final answer
    x = 6,981.17

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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.