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Finding the Fourth Proportional to 19,007.10, 28,543.05 and 13,499.10

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Solution

The fourth proportional to 19,007.10, 28,543.05 and 13,499.10 is: 20,271.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,007.10 : 28,543.05 = 13,499.10 : x
  2. Step 2: Convert to fraction form
    19,007.10/28,543.05 = 13,499.10/x
  3. Step 3: Cross multiply
    19,007.10x = 28,543.05 × 13,499.10
  4. Step 4: Simplify right side
    19,007.10x = 385,305,486.26
  5. Step 5: Solve for x
    x = 385,305,486.26/19,007.10
  6. Step 6: Final answer
    x = 20,271.66

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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.