Home / 13,353.18-18,426.87-7,764.18

Finding the Fourth Proportional to 13,353.18, 18,426.87 and 7,764.18

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Solution

The fourth proportional to 13,353.18, 18,426.87 and 7,764.18 is: 10,714.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,353.18 : 18,426.87 = 7,764.18 : x
  2. Step 2: Convert to fraction form
    13,353.18/18,426.87 = 7,764.18/x
  3. Step 3: Cross multiply
    13,353.18x = 18,426.87 × 7,764.18
  4. Step 4: Simplify right side
    13,353.18x = 143,069,535.52
  5. Step 5: Solve for x
    x = 143,069,535.52/13,353.18
  6. Step 6: Final answer
    x = 10,714.27

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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.