Home / 22,307.09-30,778.35-12,875.63

Finding the Fourth Proportional to 22,307.09, 30,778.35 and 12,875.63

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Solution

The fourth proportional to 22,307.09, 30,778.35 and 12,875.63 is: 17,765.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,307.09 : 30,778.35 = 12,875.63 : x
  2. Step 2: Convert to fraction form
    22,307.09/30,778.35 = 12,875.63/x
  3. Step 3: Cross multiply
    22,307.09x = 30,778.35 × 12,875.63
  4. Step 4: Simplify right side
    22,307.09x = 396,290,646.61
  5. Step 5: Solve for x
    x = 396,290,646.61/22,307.09
  6. Step 6: Final answer
    x = 17,765.23

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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.