Home / 9,945.18-13,730.40-6,590.88

Finding the Fourth Proportional to 9,945.18, 13,730.40 and 6,590.88

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Solution

The fourth proportional to 9,945.18, 13,730.40 and 6,590.88 is: 9,099.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,945.18 : 13,730.40 = 6,590.88 : x
  2. Step 2: Convert to fraction form
    9,945.18/13,730.40 = 6,590.88/x
  3. Step 3: Cross multiply
    9,945.18x = 13,730.40 × 6,590.88
  4. Step 4: Simplify right side
    9,945.18x = 90,495,418.75
  5. Step 5: Solve for x
    x = 90,495,418.75/9,945.18
  6. Step 6: Final answer
    x = 9,099.42

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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.