Home / 22,979.80-31,712.16-13,426.24

Finding the Fourth Proportional to 22,979.80, 31,712.16 and 13,426.24

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Solution

The fourth proportional to 22,979.80, 31,712.16 and 13,426.24 is: 18,528.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,979.80 : 31,712.16 = 13,426.24 : x
  2. Step 2: Convert to fraction form
    22,979.80/31,712.16 = 13,426.24/x
  3. Step 3: Cross multiply
    22,979.80x = 31,712.16 × 13,426.24
  4. Step 4: Simplify right side
    22,979.80x = 425,775,071.08
  5. Step 5: Solve for x
    x = 425,775,071.08/22,979.80
  6. Step 6: Final answer
    x = 18,528.23

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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.