Home / 21,657.32-29,886.87-12,703.11

Finding the Fourth Proportional to 21,657.32, 29,886.87 and 12,703.11

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Solution

The fourth proportional to 21,657.32, 29,886.87 and 12,703.11 is: 17,530.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,657.32 : 29,886.87 = 12,703.11 : x
  2. Step 2: Convert to fraction form
    21,657.32/29,886.87 = 12,703.11/x
  3. Step 3: Cross multiply
    21,657.32x = 29,886.87 × 12,703.11
  4. Step 4: Simplify right side
    21,657.32x = 379,656,197.17
  5. Step 5: Solve for x
    x = 379,656,197.17/21,657.32
  6. Step 6: Final answer
    x = 17,530.16

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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.