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Finding the Fourth Proportional to 10,359.92, 15,509.94 and 9,291.60

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Solution

The fourth proportional to 10,359.92, 15,509.94 and 9,291.60 is: 13,910.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,359.92 : 15,509.94 = 9,291.60 : x
  2. Step 2: Convert to fraction form
    10,359.92/15,509.94 = 9,291.60/x
  3. Step 3: Cross multiply
    10,359.92x = 15,509.94 × 9,291.60
  4. Step 4: Simplify right side
    10,359.92x = 144,112,158.50
  5. Step 5: Solve for x
    x = 144,112,158.50/10,359.92
  6. Step 6: Final answer
    x = 13,910.55

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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.