Home / 22,854.19-31,538.85-12,782.80

Finding the Fourth Proportional to 22,854.19, 31,538.85 and 12,782.80

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Solution

The fourth proportional to 22,854.19, 31,538.85 and 12,782.80 is: 17,640.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,854.19 : 31,538.85 = 12,782.80 : x
  2. Step 2: Convert to fraction form
    22,854.19/31,538.85 = 12,782.80/x
  3. Step 3: Cross multiply
    22,854.19x = 31,538.85 × 12,782.80
  4. Step 4: Simplify right side
    22,854.19x = 403,154,811.78
  5. Step 5: Solve for x
    x = 403,154,811.78/22,854.19
  6. Step 6: Final answer
    x = 17,640.30

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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.