Home / 13,246.40-18,271.92-7,865.18

Finding the Fourth Proportional to 13,246.40, 18,271.92 and 7,865.18

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Solution

The fourth proportional to 13,246.40, 18,271.92 and 7,865.18 is: 10,849.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,246.40 : 18,271.92 = 7,865.18 : x
  2. Step 2: Convert to fraction form
    13,246.40/18,271.92 = 7,865.18/x
  3. Step 3: Cross multiply
    13,246.40x = 18,271.92 × 7,865.18
  4. Step 4: Simplify right side
    13,246.40x = 143,711,939.75
  5. Step 5: Solve for x
    x = 143,711,939.75/13,246.40
  6. Step 6: Final answer
    x = 10,849.13

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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.