Home / 9,659.20-13,312.72-7,970.64

Finding the Fourth Proportional to 9,659.20, 13,312.72 and 7,970.64

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Solution

The fourth proportional to 9,659.20, 13,312.72 and 7,970.64 is: 10,985.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,659.20 : 13,312.72 = 7,970.64 : x
  2. Step 2: Convert to fraction form
    9,659.20/13,312.72 = 7,970.64/x
  3. Step 3: Cross multiply
    9,659.20x = 13,312.72 × 7,970.64
  4. Step 4: Simplify right side
    9,659.20x = 106,110,898.54
  5. Step 5: Solve for x
    x = 106,110,898.54/9,659.20
  6. Step 6: Final answer
    x = 10,985.47

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Similar ratio
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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.