Home / 15,474.15-21,272.21-13,312.80

Finding the Fourth Proportional to 15,474.15, 21,272.21 and 13,312.80

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Solution

The fourth proportional to 15,474.15, 21,272.21 and 13,312.80 is: 18,301.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,474.15 : 21,272.21 = 13,312.80 : x
  2. Step 2: Convert to fraction form
    15,474.15/21,272.21 = 13,312.80/x
  3. Step 3: Cross multiply
    15,474.15x = 21,272.21 × 13,312.80
  4. Step 4: Simplify right side
    15,474.15x = 283,192,677.29
  5. Step 5: Solve for x
    x = 283,192,677.29/15,474.15
  6. Step 6: Final answer
    x = 18,301.02

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.