Home / 21,537.77-29,713.68-15,886.08

Finding the Fourth Proportional to 21,537.77, 29,713.68 and 15,886.08

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Solution

The fourth proportional to 21,537.77, 29,713.68 and 15,886.08 is: 21,916.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,537.77 : 29,713.68 = 15,886.08 : x
  2. Step 2: Convert to fraction form
    21,537.77/29,713.68 = 15,886.08/x
  3. Step 3: Cross multiply
    21,537.77x = 29,713.68 × 15,886.08
  4. Step 4: Simplify right side
    21,537.77x = 472,033,897.57
  5. Step 5: Solve for x
    x = 472,033,897.57/21,537.77
  6. Step 6: Final answer
    x = 21,916.57

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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.