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Finding the Fourth Proportional to 19,258.13, 28,888.83 and 5,407.13

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Solution

The fourth proportional to 19,258.13, 28,888.83 and 5,407.13 is: 8,111.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,258.13 : 28,888.83 = 5,407.13 : x
  2. Step 2: Convert to fraction form
    19,258.13/28,888.83 = 5,407.13/x
  3. Step 3: Cross multiply
    19,258.13x = 28,888.83 × 5,407.13
  4. Step 4: Simplify right side
    19,258.13x = 156,205,659.36
  5. Step 5: Solve for x
    x = 156,205,659.36/19,258.13
  6. Step 6: Final answer
    x = 8,111.15

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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.