Home / 31,879.72-47,782.64-28,189.16

Finding the Fourth Proportional to 31,879.72, 47,782.64 and 28,189.16

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Solution

The fourth proportional to 31,879.72, 47,782.64 and 28,189.16 is: 42,251.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,879.72 : 47,782.64 = 28,189.16 : x
  2. Step 2: Convert to fraction form
    31,879.72/47,782.64 = 28,189.16/x
  3. Step 3: Cross multiply
    31,879.72x = 47,782.64 × 28,189.16
  4. Step 4: Simplify right side
    31,879.72x = 1,346,952,484.18
  5. Step 5: Solve for x
    x = 1,346,952,484.18/31,879.72
  6. Step 6: Final answer
    x = 42,251.08

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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.