Home / 13,612.12-18,818.39-13,487.45

Finding the Fourth Proportional to 13,612.12, 18,818.39 and 13,487.45

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Solution

The fourth proportional to 13,612.12, 18,818.39 and 13,487.45 is: 18,646.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,612.12 : 18,818.39 = 13,487.45 : x
  2. Step 2: Convert to fraction form
    13,612.12/18,818.39 = 13,487.45/x
  3. Step 3: Cross multiply
    13,612.12x = 18,818.39 × 13,487.45
  4. Step 4: Simplify right side
    13,612.12x = 253,812,033.83
  5. Step 5: Solve for x
    x = 253,812,033.83/13,612.12
  6. Step 6: Final answer
    x = 18,646.04

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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.