Home / 22,715.40-31,346.76-12,643.92

Finding the Fourth Proportional to 22,715.40, 31,346.76 and 12,643.92

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Solution

The fourth proportional to 22,715.40, 31,346.76 and 12,643.92 is: 17,448.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,715.40 : 31,346.76 = 12,643.92 : x
  2. Step 2: Convert to fraction form
    22,715.40/31,346.76 = 12,643.92/x
  3. Step 3: Cross multiply
    22,715.40x = 31,346.76 × 12,643.92
  4. Step 4: Simplify right side
    22,715.40x = 396,345,925.70
  5. Step 5: Solve for x
    x = 396,345,925.70/22,715.40
  6. Step 6: Final answer
    x = 17,448.34

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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.