Home / 21,325.56-31,988.34-5,743.18

Finding the Fourth Proportional to 21,325.56, 31,988.34 and 5,743.18

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Solution

The fourth proportional to 21,325.56, 31,988.34 and 5,743.18 is: 8,614.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,325.56 : 31,988.34 = 5,743.18 : x
  2. Step 2: Convert to fraction form
    21,325.56/31,988.34 = 5,743.18/x
  3. Step 3: Cross multiply
    21,325.56x = 31,988.34 × 5,743.18
  4. Step 4: Simplify right side
    21,325.56x = 183,714,794.52
  5. Step 5: Solve for x
    x = 183,714,794.52/21,325.56
  6. Step 6: Final answer
    x = 8,614.77

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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.