Home / 28,347.58-39,118.71-15,772.06

Finding the Fourth Proportional to 28,347.58, 39,118.71 and 15,772.06

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Solution

The fourth proportional to 28,347.58, 39,118.71 and 15,772.06 is: 21,764.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,347.58 : 39,118.71 = 15,772.06 : x
  2. Step 2: Convert to fraction form
    28,347.58/39,118.71 = 15,772.06/x
  3. Step 3: Cross multiply
    28,347.58x = 39,118.71 × 15,772.06
  4. Step 4: Simplify right side
    28,347.58x = 616,982,641.24
  5. Step 5: Solve for x
    x = 616,982,641.24/28,347.58
  6. Step 6: Final answer
    x = 21,764.91

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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.