Home / 21,387.76-32,081.52-5,805.40

Finding the Fourth Proportional to 21,387.76, 32,081.52 and 5,805.40

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Solution

The fourth proportional to 21,387.76, 32,081.52 and 5,805.40 is: 8,708.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,387.76 : 32,081.52 = 5,805.40 : x
  2. Step 2: Convert to fraction form
    21,387.76/32,081.52 = 5,805.40/x
  3. Step 3: Cross multiply
    21,387.76x = 32,081.52 × 5,805.40
  4. Step 4: Simplify right side
    21,387.76x = 186,246,056.21
  5. Step 5: Solve for x
    x = 186,246,056.21/21,387.76
  6. Step 6: Final answer
    x = 8,708.07

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.