Home / 22,690.56-31,312.47-13,129.74

Finding the Fourth Proportional to 22,690.56, 31,312.47 and 13,129.74

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Solution

The fourth proportional to 22,690.56, 31,312.47 and 13,129.74 is: 18,118.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,690.56 : 31,312.47 = 13,129.74 : x
  2. Step 2: Convert to fraction form
    22,690.56/31,312.47 = 13,129.74/x
  3. Step 3: Cross multiply
    22,690.56x = 31,312.47 × 13,129.74
  4. Step 4: Simplify right side
    22,690.56x = 411,124,589.86
  5. Step 5: Solve for x
    x = 411,124,589.86/22,690.56
  6. Step 6: Final answer
    x = 18,118.75

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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.