Home / 28,168.39-42,258.06-8,445.29

Finding the Fourth Proportional to 28,168.39, 42,258.06 and 8,445.29

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Solution

The fourth proportional to 28,168.39, 42,258.06 and 8,445.29 is: 12,669.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,168.39 : 42,258.06 = 8,445.29 : x
  2. Step 2: Convert to fraction form
    28,168.39/42,258.06 = 8,445.29/x
  3. Step 3: Cross multiply
    28,168.39x = 42,258.06 × 8,445.29
  4. Step 4: Simplify right side
    28,168.39x = 356,881,677.18
  5. Step 5: Solve for x
    x = 356,881,677.18/28,168.39
  6. Step 6: Final answer
    x = 12,669.58

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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.