Home / 13,612.40-20,419.95-5,293.10

Finding the Fourth Proportional to 13,612.40, 20,419.95 and 5,293.10

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Solution

The fourth proportional to 13,612.40, 20,419.95 and 5,293.10 is: 7,940.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,612.40 : 20,419.95 = 5,293.10 : x
  2. Step 2: Convert to fraction form
    13,612.40/20,419.95 = 5,293.10/x
  3. Step 3: Cross multiply
    13,612.40x = 20,419.95 × 5,293.10
  4. Step 4: Simplify right side
    13,612.40x = 108,084,763.61
  5. Step 5: Solve for x
    x = 108,084,763.61/13,612.40
  6. Step 6: Final answer
    x = 7,940.17

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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.