Home / 13,370.81-18,452.01-7,402.89

Finding the Fourth Proportional to 13,370.81, 18,452.01 and 7,402.89

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Solution

The fourth proportional to 13,370.81, 18,452.01 and 7,402.89 is: 10,216.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,370.81 : 18,452.01 = 7,402.89 : x
  2. Step 2: Convert to fraction form
    13,370.81/18,452.01 = 7,402.89/x
  3. Step 3: Cross multiply
    13,370.81x = 18,452.01 × 7,402.89
  4. Step 4: Simplify right side
    13,370.81x = 136,598,200.31
  5. Step 5: Solve for x
    x = 136,598,200.31/13,370.81
  6. Step 6: Final answer
    x = 10,216.15

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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.