Home / 15,002.72-20,703.72-8,288.36

Finding the Fourth Proportional to 15,002.72, 20,703.72 and 8,288.36

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Solution

The fourth proportional to 15,002.72, 20,703.72 and 8,288.36 is: 11,437.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,002.72 : 20,703.72 = 8,288.36 : x
  2. Step 2: Convert to fraction form
    15,002.72/20,703.72 = 8,288.36/x
  3. Step 3: Cross multiply
    15,002.72x = 20,703.72 × 8,288.36
  4. Step 4: Simplify right side
    15,002.72x = 171,599,884.70
  5. Step 5: Solve for x
    x = 171,599,884.70/15,002.72
  6. Step 6: Final answer
    x = 11,437.92

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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.