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Finding the Fourth Proportional to 15,298.80, 22,948.20 and 8,300.40

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Solution

The fourth proportional to 15,298.80, 22,948.20 and 8,300.40 is: 12,450.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,298.80 : 22,948.20 = 8,300.40 : x
  2. Step 2: Convert to fraction form
    15,298.80/22,948.20 = 8,300.40/x
  3. Step 3: Cross multiply
    15,298.80x = 22,948.20 × 8,300.40
  4. Step 4: Simplify right side
    15,298.80x = 190,479,239.28
  5. Step 5: Solve for x
    x = 190,479,239.28/15,298.80
  6. Step 6: Final answer
    x = 12,450.60

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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.