Home / 22,565.21-31,148.16-13,133.77

Finding the Fourth Proportional to 22,565.21, 31,148.16 and 13,133.77

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Solution

The fourth proportional to 22,565.21, 31,148.16 and 13,133.77 is: 18,129.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,565.21 : 31,148.16 = 13,133.77 : x
  2. Step 2: Convert to fraction form
    22,565.21/31,148.16 = 13,133.77/x
  3. Step 3: Cross multiply
    22,565.21x = 31,148.16 × 13,133.77
  4. Step 4: Simplify right side
    22,565.21x = 409,092,716.12
  5. Step 5: Solve for x
    x = 409,092,716.12/22,565.21
  6. Step 6: Final answer
    x = 18,129.36

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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.