Home / 13,381.17-18,465.28-7,412.48

Finding the Fourth Proportional to 13,381.17, 18,465.28 and 7,412.48

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Solution

The fourth proportional to 13,381.17, 18,465.28 and 7,412.48 is: 10,228.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,381.17 : 18,465.28 = 7,412.48 : x
  2. Step 2: Convert to fraction form
    13,381.17/18,465.28 = 7,412.48/x
  3. Step 3: Cross multiply
    13,381.17x = 18,465.28 × 7,412.48
  4. Step 4: Simplify right side
    13,381.17x = 136,873,518.69
  5. Step 5: Solve for x
    x = 136,873,518.69/13,381.17
  6. Step 6: Final answer
    x = 10,228.82

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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.