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Finding the Fourth Proportional to 19,001.63, 28,487.08 and 7,916.66

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Solution

The fourth proportional to 19,001.63, 28,487.08 and 7,916.66 is: 11,868.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,001.63 : 28,487.08 = 7,916.66 : x
  2. Step 2: Convert to fraction form
    19,001.63/28,487.08 = 7,916.66/x
  3. Step 3: Cross multiply
    19,001.63x = 28,487.08 × 7,916.66
  4. Step 4: Simplify right side
    19,001.63x = 225,522,526.75
  5. Step 5: Solve for x
    x = 225,522,526.75/19,001.63
  6. Step 6: Final answer
    x = 11,868.59

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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.