Home / 15,778.18-21,774.59-8,705.26

Finding the Fourth Proportional to 15,778.18, 21,774.59 and 8,705.26

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Solution

The fourth proportional to 15,778.18, 21,774.59 and 8,705.26 is: 12,013.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,778.18 : 21,774.59 = 8,705.26 : x
  2. Step 2: Convert to fraction form
    15,778.18/21,774.59 = 8,705.26/x
  3. Step 3: Cross multiply
    15,778.18x = 21,774.59 × 8,705.26
  4. Step 4: Simplify right side
    15,778.18x = 189,553,467.34
  5. Step 5: Solve for x
    x = 189,553,467.34/15,778.18
  6. Step 6: Final answer
    x = 12,013.65

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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.