Home / 13,439.84-20,142.40-5,532.88

Finding the Fourth Proportional to 13,439.84, 20,142.40 and 5,532.88

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Solution

The fourth proportional to 13,439.84, 20,142.40 and 5,532.88 is: 8,292.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,439.84 : 20,142.40 = 5,532.88 : x
  2. Step 2: Convert to fraction form
    13,439.84/20,142.40 = 5,532.88/x
  3. Step 3: Cross multiply
    13,439.84x = 20,142.40 × 5,532.88
  4. Step 4: Simplify right side
    13,439.84x = 111,445,482.11
  5. Step 5: Solve for x
    x = 111,445,482.11/13,439.84
  6. Step 6: Final answer
    x = 8,292.17

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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.