Home / 13,430.18-18,539.33-9,065.46

Finding the Fourth Proportional to 13,430.18, 18,539.33 and 9,065.46

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Solution

The fourth proportional to 13,430.18, 18,539.33 and 9,065.46 is: 12,514.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,430.18 : 18,539.33 = 9,065.46 : x
  2. Step 2: Convert to fraction form
    13,430.18/18,539.33 = 9,065.46/x
  3. Step 3: Cross multiply
    13,430.18x = 18,539.33 × 9,065.46
  4. Step 4: Simplify right side
    13,430.18x = 168,067,461.85
  5. Step 5: Solve for x
    x = 168,067,461.85/13,430.18
  6. Step 6: Final answer
    x = 12,514.16

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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.