Home / 13,370.42-18,451.28-7,402.18

Finding the Fourth Proportional to 13,370.42, 18,451.28 and 7,402.18

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Solution

The fourth proportional to 13,370.42, 18,451.28 and 7,402.18 is: 10,215.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,370.42 : 18,451.28 = 7,402.18 : x
  2. Step 2: Convert to fraction form
    13,370.42/18,451.28 = 7,402.18/x
  3. Step 3: Cross multiply
    13,370.42x = 18,451.28 × 7,402.18
  4. Step 4: Simplify right side
    13,370.42x = 136,579,612.65
  5. Step 5: Solve for x
    x = 136,579,612.65/13,370.42
  6. Step 6: Final answer
    x = 10,215.06

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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.