Home / 36,333.12-54,479.16-12,629.76

Finding the Fourth Proportional to 36,333.12, 54,479.16 and 12,629.76

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Solution

The fourth proportional to 36,333.12, 54,479.16 and 12,629.76 is: 18,937.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    36,333.12 : 54,479.16 = 12,629.76 : x
  2. Step 2: Convert to fraction form
    36,333.12/54,479.16 = 12,629.76/x
  3. Step 3: Cross multiply
    36,333.12x = 54,479.16 × 12,629.76
  4. Step 4: Simplify right side
    36,333.12x = 688,058,715.80
  5. Step 5: Solve for x
    x = 688,058,715.80/36,333.12
  6. Step 6: Final answer
    x = 18,937.51

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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.