Home / 22,780.63-34,170.80-7,780.51

Finding the Fourth Proportional to 22,780.63, 34,170.80 and 7,780.51

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Solution

The fourth proportional to 22,780.63, 34,170.80 and 7,780.51 is: 11,670.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,780.63 : 34,170.80 = 7,780.51 : x
  2. Step 2: Convert to fraction form
    22,780.63/34,170.80 = 7,780.51/x
  3. Step 3: Cross multiply
    22,780.63x = 34,170.80 × 7,780.51
  4. Step 4: Simplify right side
    22,780.63x = 265,866,251.11
  5. Step 5: Solve for x
    x = 265,866,251.11/22,780.63
  6. Step 6: Final answer
    x = 11,670.72

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.