Home / 15,232.51-21,001.28-12,680.09

Finding the Fourth Proportional to 15,232.51, 21,001.28 and 12,680.09

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Solution

The fourth proportional to 15,232.51, 21,001.28 and 12,680.09 is: 17,482.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,232.51 : 21,001.28 = 12,680.09 : x
  2. Step 2: Convert to fraction form
    15,232.51/21,001.28 = 12,680.09/x
  3. Step 3: Cross multiply
    15,232.51x = 21,001.28 × 12,680.09
  4. Step 4: Simplify right side
    15,232.51x = 266,298,149.00
  5. Step 5: Solve for x
    x = 266,298,149.00/15,232.51
  6. Step 6: Final answer
    x = 17,482.23

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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.