Home / 22,712.81-31,343.36-12,641.67

Finding the Fourth Proportional to 22,712.81, 31,343.36 and 12,641.67

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Solution

The fourth proportional to 22,712.81, 31,343.36 and 12,641.67 is: 17,445.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,712.81 : 31,343.36 = 12,641.67 : x
  2. Step 2: Convert to fraction form
    22,712.81/31,343.36 = 12,641.67/x
  3. Step 3: Cross multiply
    22,712.81x = 31,343.36 × 12,641.67
  4. Step 4: Simplify right side
    22,712.81x = 396,232,350.60
  5. Step 5: Solve for x
    x = 396,232,350.60/22,712.81
  6. Step 6: Final answer
    x = 17,445.33

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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.