Home / 15,117.06-20,856.02-9,146.55

Finding the Fourth Proportional to 15,117.06, 20,856.02 and 9,146.55

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Solution

The fourth proportional to 15,117.06, 20,856.02 and 9,146.55 is: 12,618.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,117.06 : 20,856.02 = 9,146.55 : x
  2. Step 2: Convert to fraction form
    15,117.06/20,856.02 = 9,146.55/x
  3. Step 3: Cross multiply
    15,117.06x = 20,856.02 × 9,146.55
  4. Step 4: Simplify right side
    15,117.06x = 190,760,584.00
  5. Step 5: Solve for x
    x = 190,760,584.00/15,117.06
  6. Step 6: Final answer
    x = 12,618.89

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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.