Home / 18,907.40-28,365.70-5,760.02

Finding the Fourth Proportional to 18,907.40, 28,365.70 and 5,760.02

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Solution

The fourth proportional to 18,907.40, 28,365.70 and 5,760.02 is: 8,641.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,907.40 : 28,365.70 = 5,760.02 : x
  2. Step 2: Convert to fraction form
    18,907.40/28,365.70 = 5,760.02/x
  3. Step 3: Cross multiply
    18,907.40x = 28,365.70 × 5,760.02
  4. Step 4: Simplify right side
    18,907.40x = 163,386,999.31
  5. Step 5: Solve for x
    x = 163,386,999.31/18,907.40
  6. Step 6: Final answer
    x = 8,641.43

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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.