Home / 28,317.25-39,077.81-15,570.65

Finding the Fourth Proportional to 28,317.25, 39,077.81 and 15,570.65

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Solution

The fourth proportional to 28,317.25, 39,077.81 and 15,570.65 is: 21,487.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,317.25 : 39,077.81 = 15,570.65 : x
  2. Step 2: Convert to fraction form
    28,317.25/39,077.81 = 15,570.65/x
  3. Step 3: Cross multiply
    28,317.25x = 39,077.81 × 15,570.65
  4. Step 4: Simplify right side
    28,317.25x = 608,466,902.28
  5. Step 5: Solve for x
    x = 608,466,902.28/28,317.25
  6. Step 6: Final answer
    x = 21,487.50

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.