Home / 21,125.06-29,159.88-12,176.14

Finding the Fourth Proportional to 21,125.06, 29,159.88 and 12,176.14

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Solution

The fourth proportional to 21,125.06, 29,159.88 and 12,176.14 is: 16,807.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,125.06 : 29,159.88 = 12,176.14 : x
  2. Step 2: Convert to fraction form
    21,125.06/29,159.88 = 12,176.14/x
  3. Step 3: Cross multiply
    21,125.06x = 29,159.88 × 12,176.14
  4. Step 4: Simplify right side
    21,125.06x = 355,054,781.26
  5. Step 5: Solve for x
    x = 355,054,781.26/21,125.06
  6. Step 6: Final answer
    x = 16,807.28

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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.