Home / 28,636.18-39,515.94-15,888.82

Finding the Fourth Proportional to 28,636.18, 39,515.94 and 15,888.82

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Solution

The fourth proportional to 28,636.18, 39,515.94 and 15,888.82 is: 21,925.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,636.18 : 39,515.94 = 15,888.82 : x
  2. Step 2: Convert to fraction form
    28,636.18/39,515.94 = 15,888.82/x
  3. Step 3: Cross multiply
    28,636.18x = 39,515.94 × 15,888.82
  4. Step 4: Simplify right side
    28,636.18x = 627,861,657.79
  5. Step 5: Solve for x
    x = 627,861,657.79/28,636.18
  6. Step 6: Final answer
    x = 21,925.47

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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.