Home / 15,426.79-21,287.74-8,713.07

Finding the Fourth Proportional to 15,426.79, 21,287.74 and 8,713.07

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Solution

The fourth proportional to 15,426.79, 21,287.74 and 8,713.07 is: 12,023.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,426.79 : 21,287.74 = 8,713.07 : x
  2. Step 2: Convert to fraction form
    15,426.79/21,287.74 = 8,713.07/x
  3. Step 3: Cross multiply
    15,426.79x = 21,287.74 × 8,713.07
  4. Step 4: Simplify right side
    15,426.79x = 185,481,568.76
  5. Step 5: Solve for x
    x = 185,481,568.76/15,426.79
  6. Step 6: Final answer
    x = 12,023.34

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Half scale
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Double scale
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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.