Home / 28,258.16-38,981.54-16,766.39

Finding the Fourth Proportional to 28,258.16, 38,981.54 and 16,766.39

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Solution

The fourth proportional to 28,258.16, 38,981.54 and 16,766.39 is: 23,128.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,258.16 : 38,981.54 = 16,766.39 : x
  2. Step 2: Convert to fraction form
    28,258.16/38,981.54 = 16,766.39/x
  3. Step 3: Cross multiply
    28,258.16x = 38,981.54 × 16,766.39
  4. Step 4: Simplify right side
    28,258.16x = 653,579,841.81
  5. Step 5: Solve for x
    x = 653,579,841.81/28,258.16
  6. Step 6: Final answer
    x = 23,128.89

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.