Home / 15,545.37-21,452.64-8,471.80

Finding the Fourth Proportional to 15,545.37, 21,452.64 and 8,471.80

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Solution

The fourth proportional to 15,545.37, 21,452.64 and 8,471.80 is: 11,691.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,545.37 : 21,452.64 = 8,471.80 : x
  2. Step 2: Convert to fraction form
    15,545.37/21,452.64 = 8,471.80/x
  3. Step 3: Cross multiply
    15,545.37x = 21,452.64 × 8,471.80
  4. Step 4: Simplify right side
    15,545.37x = 181,742,475.55
  5. Step 5: Solve for x
    x = 181,742,475.55/15,545.37
  6. Step 6: Final answer
    x = 11,691.10

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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.