Home / 13,365.92-18,445.20-7,398.08

Finding the Fourth Proportional to 13,365.92, 18,445.20 and 7,398.08

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Solution

The fourth proportional to 13,365.92, 18,445.20 and 7,398.08 is: 10,209.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,365.92 : 18,445.20 = 7,398.08 : x
  2. Step 2: Convert to fraction form
    13,365.92/18,445.20 = 7,398.08/x
  3. Step 3: Cross multiply
    13,365.92x = 18,445.20 × 7,398.08
  4. Step 4: Simplify right side
    13,365.92x = 136,459,065.22
  5. Step 5: Solve for x
    x = 136,459,065.22/13,365.92
  6. Step 6: Final answer
    x = 10,209.48

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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.