Home / 42,370.31-63,555.83-10,780.40

Finding the Fourth Proportional to 42,370.31, 63,555.83 and 10,780.40

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Solution

The fourth proportional to 42,370.31, 63,555.83 and 10,780.40 is: 16,170.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,370.31 : 63,555.83 = 10,780.40 : x
  2. Step 2: Convert to fraction form
    42,370.31/63,555.83 = 10,780.40/x
  3. Step 3: Cross multiply
    42,370.31x = 63,555.83 × 10,780.40
  4. Step 4: Simplify right side
    42,370.31x = 685,157,269.73
  5. Step 5: Solve for x
    x = 685,157,269.73/42,370.31
  6. Step 6: Final answer
    x = 16,170.69

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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.