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Finding the Fourth Proportional to 19,987.99, 30,016.02 and 19,152.07

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Solution

The fourth proportional to 19,987.99, 30,016.02 and 19,152.07 is: 28,760.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,987.99 : 30,016.02 = 19,152.07 : x
  2. Step 2: Convert to fraction form
    19,987.99/30,016.02 = 19,152.07/x
  3. Step 3: Cross multiply
    19,987.99x = 30,016.02 × 19,152.07
  4. Step 4: Simplify right side
    19,987.99x = 574,868,916.16
  5. Step 5: Solve for x
    x = 574,868,916.16/19,987.99
  6. Step 6: Final answer
    x = 28,760.72

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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.