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Finding the Fourth Proportional to 32,987.70, 49,486.95 and 18,210.87

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Solution

The fourth proportional to 32,987.70, 49,486.95 and 18,210.87 is: 27,319.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    32,987.70 : 49,486.95 = 18,210.87 : x
  2. Step 2: Convert to fraction form
    32,987.70/49,486.95 = 18,210.87/x
  3. Step 3: Cross multiply
    32,987.70x = 49,486.95 × 18,210.87
  4. Step 4: Simplify right side
    32,987.70x = 901,200,413.15
  5. Step 5: Solve for x
    x = 901,200,413.15/32,987.70
  6. Step 6: Final answer
    x = 27,319.29

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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.