Home / 19,007.20-28,535.10-10,129.60

Finding the Fourth Proportional to 19,007.20, 28,535.10 and 10,129.60

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Solution

The fourth proportional to 19,007.20, 28,535.10 and 10,129.60 is: 15,207.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,007.20 : 28,535.10 = 10,129.60 : x
  2. Step 2: Convert to fraction form
    19,007.20/28,535.10 = 10,129.60/x
  3. Step 3: Cross multiply
    19,007.20x = 28,535.10 × 10,129.60
  4. Step 4: Simplify right side
    19,007.20x = 289,049,148.96
  5. Step 5: Solve for x
    x = 289,049,148.96/19,007.20
  6. Step 6: Final answer
    x = 15,207.35

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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.