Home / 19,160.31-28,740.48-5,309.31

Finding the Fourth Proportional to 19,160.31, 28,740.48 and 5,309.31

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Solution

The fourth proportional to 19,160.31, 28,740.48 and 5,309.31 is: 7,963.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,160.31 : 28,740.48 = 5,309.31 : x
  2. Step 2: Convert to fraction form
    19,160.31/28,740.48 = 5,309.31/x
  3. Step 3: Cross multiply
    19,160.31x = 28,740.48 × 5,309.31
  4. Step 4: Simplify right side
    19,160.31x = 152,592,091.32
  5. Step 5: Solve for x
    x = 152,592,091.32/19,160.31
  6. Step 6: Final answer
    x = 7,963.97

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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.