Home / 20,916.06-28,864.35-11,484.69

Finding the Fourth Proportional to 20,916.06, 28,864.35 and 11,484.69

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Solution

The fourth proportional to 20,916.06, 28,864.35 and 11,484.69 is: 15,848.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,916.06 : 28,864.35 = 11,484.69 : x
  2. Step 2: Convert to fraction form
    20,916.06/28,864.35 = 11,484.69/x
  3. Step 3: Cross multiply
    20,916.06x = 28,864.35 × 11,484.69
  4. Step 4: Simplify right side
    20,916.06x = 331,498,111.80
  5. Step 5: Solve for x
    x = 331,498,111.80/20,916.06
  6. Step 6: Final answer
    x = 15,848.97

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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.