Home / 12,591.44-18,815.14-9,064.40

Finding the Fourth Proportional to 12,591.44, 18,815.14 and 9,064.40

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Solution

The fourth proportional to 12,591.44, 18,815.14 and 9,064.40 is: 13,544.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,591.44 : 18,815.14 = 9,064.40 : x
  2. Step 2: Convert to fraction form
    12,591.44/18,815.14 = 9,064.40/x
  3. Step 3: Cross multiply
    12,591.44x = 18,815.14 × 9,064.40
  4. Step 4: Simplify right side
    12,591.44x = 170,547,955.02
  5. Step 5: Solve for x
    x = 170,547,955.02/12,591.44
  6. Step 6: Final answer
    x = 13,544.75

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.