Home / 28,317.32-39,077.93-15,570.72

Finding the Fourth Proportional to 28,317.32, 39,077.93 and 15,570.72

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Solution

The fourth proportional to 28,317.32, 39,077.93 and 15,570.72 is: 21,487.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,317.32 : 39,077.93 = 15,570.72 : x
  2. Step 2: Convert to fraction form
    28,317.32/39,077.93 = 15,570.72/x
  3. Step 3: Cross multiply
    28,317.32x = 39,077.93 × 15,570.72
  4. Step 4: Simplify right side
    28,317.32x = 608,471,545.14
  5. Step 5: Solve for x
    x = 608,471,545.14/28,317.32
  6. Step 6: Final answer
    x = 21,487.61

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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.