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Finding the Fourth Proportional to 10,955.58, 15,120.60 and 10,591.08

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Solution

The fourth proportional to 10,955.58, 15,120.60 and 10,591.08 is: 14,617.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,955.58 : 15,120.60 = 10,591.08 : x
  2. Step 2: Convert to fraction form
    10,955.58/15,120.60 = 10,591.08/x
  3. Step 3: Cross multiply
    10,955.58x = 15,120.60 × 10,591.08
  4. Step 4: Simplify right side
    10,955.58x = 160,143,484.25
  5. Step 5: Solve for x
    x = 160,143,484.25/10,955.58
  6. Step 6: Final answer
    x = 14,617.53

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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.