Home / 13,580.61-20,328.30-9,339.11

Finding the Fourth Proportional to 13,580.61, 20,328.30 and 9,339.11

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Solution

The fourth proportional to 13,580.61, 20,328.30 and 9,339.11 is: 13,979.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,580.61 : 20,328.30 = 9,339.11 : x
  2. Step 2: Convert to fraction form
    13,580.61/20,328.30 = 9,339.11/x
  3. Step 3: Cross multiply
    13,580.61x = 20,328.30 × 9,339.11
  4. Step 4: Simplify right side
    13,580.61x = 189,848,081.48
  5. Step 5: Solve for x
    x = 189,848,081.48/13,580.61
  6. Step 6: Final answer
    x = 13,979.35

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.