Home / 22,303.72-30,776.90-12,875.32

Finding the Fourth Proportional to 22,303.72, 30,776.90 and 12,875.32

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Solution

The fourth proportional to 22,303.72, 30,776.90 and 12,875.32 is: 17,766.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,303.72 : 30,776.90 = 12,875.32 : x
  2. Step 2: Convert to fraction form
    22,303.72/30,776.90 = 12,875.32/x
  3. Step 3: Cross multiply
    22,303.72x = 30,776.90 × 12,875.32
  4. Step 4: Simplify right side
    22,303.72x = 396,262,217.85
  5. Step 5: Solve for x
    x = 396,262,217.85/22,303.72
  6. Step 6: Final answer
    x = 17,766.65

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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.