Home / 13,320.19-18,388.46-10,443.87

Finding the Fourth Proportional to 13,320.19, 18,388.46 and 10,443.87

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Solution

The fourth proportional to 13,320.19, 18,388.46 and 10,443.87 is: 14,417.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,320.19 : 18,388.46 = 10,443.87 : x
  2. Step 2: Convert to fraction form
    13,320.19/18,388.46 = 10,443.87/x
  3. Step 3: Cross multiply
    13,320.19x = 18,388.46 × 10,443.87
  4. Step 4: Simplify right side
    13,320.19x = 192,046,711.85
  5. Step 5: Solve for x
    x = 192,046,711.85/13,320.19
  6. Step 6: Final answer
    x = 14,417.72

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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.