Home / 22,711.66-31,341.45-12,639.94

Finding the Fourth Proportional to 22,711.66, 31,341.45 and 12,639.94

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Solution

The fourth proportional to 22,711.66, 31,341.45 and 12,639.94 is: 17,442.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,711.66 : 31,341.45 = 12,639.94 : x
  2. Step 2: Convert to fraction form
    22,711.66/31,341.45 = 12,639.94/x
  3. Step 3: Cross multiply
    22,711.66x = 31,341.45 × 12,639.94
  4. Step 4: Simplify right side
    22,711.66x = 396,154,047.51
  5. Step 5: Solve for x
    x = 396,154,047.51/22,711.66
  6. Step 6: Final answer
    x = 17,442.76

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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.