Home / 28,339.19-39,108.31-15,763.94

Finding the Fourth Proportional to 28,339.19, 39,108.31 and 15,763.94

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Solution

The fourth proportional to 28,339.19, 39,108.31 and 15,763.94 is: 21,754.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,339.19 : 39,108.31 = 15,763.94 : x
  2. Step 2: Convert to fraction form
    28,339.19/39,108.31 = 15,763.94/x
  3. Step 3: Cross multiply
    28,339.19x = 39,108.31 × 15,763.94
  4. Step 4: Simplify right side
    28,339.19x = 616,501,052.34
  5. Step 5: Solve for x
    x = 616,501,052.34/28,339.19
  6. Step 6: Final answer
    x = 21,754.36

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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.