Home / 13,379.91-18,464.80-7,411.46

Finding the Fourth Proportional to 13,379.91, 18,464.80 and 7,411.46

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Solution

The fourth proportional to 13,379.91, 18,464.80 and 7,411.46 is: 10,228.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,379.91 : 18,464.80 = 7,411.46 : x
  2. Step 2: Convert to fraction form
    13,379.91/18,464.80 = 7,411.46/x
  3. Step 3: Cross multiply
    13,379.91x = 18,464.80 × 7,411.46
  4. Step 4: Simplify right side
    13,379.91x = 136,851,126.61
  5. Step 5: Solve for x
    x = 136,851,126.61/13,379.91
  6. Step 6: Final answer
    x = 10,228.11

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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.