Home / 21,507.06-29,681.22-11,948.10

Finding the Fourth Proportional to 21,507.06, 29,681.22 and 11,948.10

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Solution

The fourth proportional to 21,507.06, 29,681.22 and 11,948.10 is: 16,489.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,507.06 : 29,681.22 = 11,948.10 : x
  2. Step 2: Convert to fraction form
    21,507.06/29,681.22 = 11,948.10/x
  3. Step 3: Cross multiply
    21,507.06x = 29,681.22 × 11,948.10
  4. Step 4: Simplify right side
    21,507.06x = 354,634,184.68
  5. Step 5: Solve for x
    x = 354,634,184.68/21,507.06
  6. Step 6: Final answer
    x = 16,489.20

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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.