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Finding the Fourth Proportional to 9,957.80, 14,904.30 and 7,992.20

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Solution

The fourth proportional to 9,957.80, 14,904.30 and 7,992.20 is: 11,962.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,957.80 : 14,904.30 = 7,992.20 : x
  2. Step 2: Convert to fraction form
    9,957.80/14,904.30 = 7,992.20/x
  3. Step 3: Cross multiply
    9,957.80x = 14,904.30 × 7,992.20
  4. Step 4: Simplify right side
    9,957.80x = 119,118,146.46
  5. Step 5: Solve for x
    x = 119,118,146.46/9,957.80
  6. Step 6: Final answer
    x = 11,962.30

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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.