Home / 21,316.02-29,434.68-13,371.90

Finding the Fourth Proportional to 21,316.02, 29,434.68 and 13,371.90

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Solution

The fourth proportional to 21,316.02, 29,434.68 and 13,371.90 is: 18,464.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,316.02 : 29,434.68 = 13,371.90 : x
  2. Step 2: Convert to fraction form
    21,316.02/29,434.68 = 13,371.90/x
  3. Step 3: Cross multiply
    21,316.02x = 29,434.68 × 13,371.90
  4. Step 4: Simplify right side
    21,316.02x = 393,597,597.49
  5. Step 5: Solve for x
    x = 393,597,597.49/21,316.02
  6. Step 6: Final answer
    x = 18,464.87

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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.