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Finding the Fourth Proportional to 9,908.80, 14,838.90 and 7,430.20

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Solution

The fourth proportional to 9,908.80, 14,838.90 and 7,430.20 is: 11,127.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,908.80 : 14,838.90 = 7,430.20 : x
  2. Step 2: Convert to fraction form
    9,908.80/14,838.90 = 7,430.20/x
  3. Step 3: Cross multiply
    9,908.80x = 14,838.90 × 7,430.20
  4. Step 4: Simplify right side
    9,908.80x = 110,255,994.78
  5. Step 5: Solve for x
    x = 110,255,994.78/9,908.80
  6. Step 6: Final answer
    x = 11,127.08

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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.