Home / 12,159.01-16,778.27-7,681.13

Finding the Fourth Proportional to 12,159.01, 16,778.27 and 7,681.13

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Solution

The fourth proportional to 12,159.01, 16,778.27 and 7,681.13 is: 10,599.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,159.01 : 16,778.27 = 7,681.13 : x
  2. Step 2: Convert to fraction form
    12,159.01/16,778.27 = 7,681.13/x
  3. Step 3: Cross multiply
    12,159.01x = 16,778.27 × 7,681.13
  4. Step 4: Simplify right side
    12,159.01x = 128,876,071.28
  5. Step 5: Solve for x
    x = 128,876,071.28/12,159.01
  6. Step 6: Final answer
    x = 10,599.22

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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.