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Finding the Fourth Proportional to 19,258.80, 28,888.20 and 9,404.40

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Solution

The fourth proportional to 19,258.80, 28,888.20 and 9,404.40 is: 14,106.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,258.80 : 28,888.20 = 9,404.40 : x
  2. Step 2: Convert to fraction form
    19,258.80/28,888.20 = 9,404.40/x
  3. Step 3: Cross multiply
    19,258.80x = 28,888.20 × 9,404.40
  4. Step 4: Simplify right side
    19,258.80x = 271,676,188.08
  5. Step 5: Solve for x
    x = 271,676,188.08/19,258.80
  6. Step 6: Final answer
    x = 14,106.60

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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.