Home / 21,508.40-29,681.60-12,554.16

Finding the Fourth Proportional to 21,508.40, 29,681.60 and 12,554.16

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Solution

The fourth proportional to 21,508.40, 29,681.60 and 12,554.16 is: 17,324.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,508.40 : 29,681.60 = 12,554.16 : x
  2. Step 2: Convert to fraction form
    21,508.40/29,681.60 = 12,554.16/x
  3. Step 3: Cross multiply
    21,508.40x = 29,681.60 × 12,554.16
  4. Step 4: Simplify right side
    21,508.40x = 372,627,555.46
  5. Step 5: Solve for x
    x = 372,627,555.46/21,508.40
  6. Step 6: Final answer
    x = 17,324.75

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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.