Home / 15,834.42-21,807.13-13,157.63

Finding the Fourth Proportional to 15,834.42, 21,807.13 and 13,157.63

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Solution

The fourth proportional to 15,834.42, 21,807.13 and 13,157.63 is: 18,120.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,834.42 : 21,807.13 = 13,157.63 : x
  2. Step 2: Convert to fraction form
    15,834.42/21,807.13 = 13,157.63/x
  3. Step 3: Cross multiply
    15,834.42x = 21,807.13 × 13,157.63
  4. Step 4: Simplify right side
    15,834.42x = 286,930,147.90
  5. Step 5: Solve for x
    x = 286,930,147.90/15,834.42
  6. Step 6: Final answer
    x = 18,120.66

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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.