Home / 28,506.75-39,338.60-15,931.59

Finding the Fourth Proportional to 28,506.75, 39,338.60 and 15,931.59

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Solution

The fourth proportional to 28,506.75, 39,338.60 and 15,931.59 is: 21,985.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,506.75 : 39,338.60 = 15,931.59 : x
  2. Step 2: Convert to fraction form
    28,506.75/39,338.60 = 15,931.59/x
  3. Step 3: Cross multiply
    28,506.75x = 39,338.60 × 15,931.59
  4. Step 4: Simplify right side
    28,506.75x = 626,726,366.72
  5. Step 5: Solve for x
    x = 626,726,366.72/28,506.75
  6. Step 6: Final answer
    x = 21,985.19

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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.