Home / 22,621.20-31,184.48-15,886.32

Finding the Fourth Proportional to 22,621.20, 31,184.48 and 15,886.32

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Solution

The fourth proportional to 22,621.20, 31,184.48 and 15,886.32 is: 21,900.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,621.20 : 31,184.48 = 15,886.32 : x
  2. Step 2: Convert to fraction form
    22,621.20/31,184.48 = 15,886.32/x
  3. Step 3: Cross multiply
    22,621.20x = 31,184.48 × 15,886.32
  4. Step 4: Simplify right side
    22,621.20x = 495,406,628.31
  5. Step 5: Solve for x
    x = 495,406,628.31/22,621.20
  6. Step 6: Final answer
    x = 21,900.10

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Similar ratio
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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.