Home / 13,228.16-18,254.80-7,259.92

Finding the Fourth Proportional to 13,228.16, 18,254.80 and 7,259.92

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Solution

The fourth proportional to 13,228.16, 18,254.80 and 7,259.92 is: 10,018.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,228.16 : 18,254.80 = 7,259.92 : x
  2. Step 2: Convert to fraction form
    13,228.16/18,254.80 = 7,259.92/x
  3. Step 3: Cross multiply
    13,228.16x = 18,254.80 × 7,259.92
  4. Step 4: Simplify right side
    13,228.16x = 132,528,387.62
  5. Step 5: Solve for x
    x = 132,528,387.62/13,228.16
  6. Step 6: Final answer
    x = 10,018.66

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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.