Home / 10,988.24-15,161.16-6,681.20

Finding the Fourth Proportional to 10,988.24, 15,161.16 and 6,681.20

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Solution

The fourth proportional to 10,988.24, 15,161.16 and 6,681.20 is: 9,218.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,988.24 : 15,161.16 = 6,681.20 : x
  2. Step 2: Convert to fraction form
    10,988.24/15,161.16 = 6,681.20/x
  3. Step 3: Cross multiply
    10,988.24x = 15,161.16 × 6,681.20
  4. Step 4: Simplify right side
    10,988.24x = 101,294,742.19
  5. Step 5: Solve for x
    x = 101,294,742.19/10,988.24
  6. Step 6: Final answer
    x = 9,218.47

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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.