Home / 15,291.30-21,099.52-9,616.20

Finding the Fourth Proportional to 15,291.30, 21,099.52 and 9,616.20

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Solution

The fourth proportional to 15,291.30, 21,099.52 and 9,616.20 is: 13,268.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,291.30 : 21,099.52 = 9,616.20 : x
  2. Step 2: Convert to fraction form
    15,291.30/21,099.52 = 9,616.20/x
  3. Step 3: Cross multiply
    15,291.30x = 21,099.52 × 9,616.20
  4. Step 4: Simplify right side
    15,291.30x = 202,897,204.22
  5. Step 5: Solve for x
    x = 202,897,204.22/15,291.30
  6. Step 6: Final answer
    x = 13,268.80

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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.