Home / 21,139.48-31,685.26-16,424.48

Finding the Fourth Proportional to 21,139.48, 31,685.26 and 16,424.48

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Solution

The fourth proportional to 21,139.48, 31,685.26 and 16,424.48 is: 24,618.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,139.48 : 31,685.26 = 16,424.48 : x
  2. Step 2: Convert to fraction form
    21,139.48/31,685.26 = 16,424.48/x
  3. Step 3: Cross multiply
    21,139.48x = 31,685.26 × 16,424.48
  4. Step 4: Simplify right side
    21,139.48x = 520,413,919.16
  5. Step 5: Solve for x
    x = 520,413,919.16/21,139.48
  6. Step 6: Final answer
    x = 24,618.10

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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.