Home / 21,294.28-29,386.65-11,862.64

Finding the Fourth Proportional to 21,294.28, 29,386.65 and 11,862.64

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Solution

The fourth proportional to 21,294.28, 29,386.65 and 11,862.64 is: 16,370.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,294.28 : 29,386.65 = 11,862.64 : x
  2. Step 2: Convert to fraction form
    21,294.28/29,386.65 = 11,862.64/x
  3. Step 3: Cross multiply
    21,294.28x = 29,386.65 × 11,862.64
  4. Step 4: Simplify right side
    21,294.28x = 348,603,249.76
  5. Step 5: Solve for x
    x = 348,603,249.76/21,294.28
  6. Step 6: Final answer
    x = 16,370.75

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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.