Home / 31,001.07-42,779.66-16,853.79

Finding the Fourth Proportional to 31,001.07, 42,779.66 and 16,853.79

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Solution

The fourth proportional to 31,001.07, 42,779.66 and 16,853.79 is: 23,257.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,001.07 : 42,779.66 = 16,853.79 : x
  2. Step 2: Convert to fraction form
    31,001.07/42,779.66 = 16,853.79/x
  3. Step 3: Cross multiply
    31,001.07x = 42,779.66 × 16,853.79
  4. Step 4: Simplify right side
    31,001.07x = 720,999,405.91
  5. Step 5: Solve for x
    x = 720,999,405.91/31,001.07
  6. Step 6: Final answer
    x = 23,257.24

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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.