Home / 21,049.43-29,047.48-12,547.15

Finding the Fourth Proportional to 21,049.43, 29,047.48 and 12,547.15

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Solution

The fourth proportional to 21,049.43, 29,047.48 and 12,547.15 is: 17,314.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,049.43 : 29,047.48 = 12,547.15 : x
  2. Step 2: Convert to fraction form
    21,049.43/29,047.48 = 12,547.15/x
  3. Step 3: Cross multiply
    21,049.43x = 29,047.48 × 12,547.15
  4. Step 4: Simplify right side
    21,049.43x = 364,462,984.70
  5. Step 5: Solve for x
    x = 364,462,984.70/21,049.43
  6. Step 6: Final answer
    x = 17,314.63

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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.