Home / 31,878.81-47,818.31-15,235.07

Finding the Fourth Proportional to 31,878.81, 47,818.31 and 15,235.07

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Solution

The fourth proportional to 31,878.81, 47,818.31 and 15,235.07 is: 22,852.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,878.81 : 47,818.31 = 15,235.07 : x
  2. Step 2: Convert to fraction form
    31,878.81/47,818.31 = 15,235.07/x
  3. Step 3: Cross multiply
    31,878.81x = 47,818.31 × 15,235.07
  4. Step 4: Simplify right side
    31,878.81x = 728,514,984.86
  5. Step 5: Solve for x
    x = 728,514,984.86/31,878.81
  6. Step 6: Final answer
    x = 22,852.64

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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.