Home / 10,890.18-15,027.66-6,109.16

Finding the Fourth Proportional to 10,890.18, 15,027.66 and 6,109.16

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Solution

The fourth proportional to 10,890.18, 15,027.66 and 6,109.16 is: 8,430.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,890.18 : 15,027.66 = 6,109.16 : x
  2. Step 2: Convert to fraction form
    10,890.18/15,027.66 = 6,109.16/x
  3. Step 3: Cross multiply
    10,890.18x = 15,027.66 × 6,109.16
  4. Step 4: Simplify right side
    10,890.18x = 91,806,304.23
  5. Step 5: Solve for x
    x = 91,806,304.23/10,890.18
  6. Step 6: Final answer
    x = 8,430.19

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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.