Home / 10,521.22-15,780.34-4,283.95

Finding the Fourth Proportional to 10,521.22, 15,780.34 and 4,283.95

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Solution

The fourth proportional to 10,521.22, 15,780.34 and 4,283.95 is: 6,425.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,521.22 : 15,780.34 = 4,283.95 : x
  2. Step 2: Convert to fraction form
    10,521.22/15,780.34 = 4,283.95/x
  3. Step 3: Cross multiply
    10,521.22x = 15,780.34 × 4,283.95
  4. Step 4: Simplify right side
    10,521.22x = 67,602,187.54
  5. Step 5: Solve for x
    x = 67,602,187.54/10,521.22
  6. Step 6: Final answer
    x = 6,425.32

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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.