Home / 22,784.72-31,442.86-12,712.57

Finding the Fourth Proportional to 22,784.72, 31,442.86 and 12,712.57

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Solution

The fourth proportional to 22,784.72, 31,442.86 and 12,712.57 is: 17,543.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,784.72 : 31,442.86 = 12,712.57 : x
  2. Step 2: Convert to fraction form
    22,784.72/31,442.86 = 12,712.57/x
  3. Step 3: Cross multiply
    22,784.72x = 31,442.86 × 12,712.57
  4. Step 4: Simplify right side
    22,784.72x = 399,719,558.75
  5. Step 5: Solve for x
    x = 399,719,558.75/22,784.72
  6. Step 6: Final answer
    x = 17,543.32

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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.