Home / 15,851.22-21,874.93-8,681.01

Finding the Fourth Proportional to 15,851.22, 21,874.93 and 8,681.01

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Solution

The fourth proportional to 15,851.22, 21,874.93 and 8,681.01 is: 11,979.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,851.22 : 21,874.93 = 8,681.01 : x
  2. Step 2: Convert to fraction form
    15,851.22/21,874.93 = 8,681.01/x
  3. Step 3: Cross multiply
    15,851.22x = 21,874.93 × 8,681.01
  4. Step 4: Simplify right side
    15,851.22x = 189,896,398.41
  5. Step 5: Solve for x
    x = 189,896,398.41/15,851.22
  6. Step 6: Final answer
    x = 11,979.92

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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.