Home / 28,504.56-39,338.73-15,931.74

Finding the Fourth Proportional to 28,504.56, 39,338.73 and 15,931.74

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Solution

The fourth proportional to 28,504.56, 39,338.73 and 15,931.74 is: 21,987.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,504.56 : 39,338.73 = 15,931.74 : x
  2. Step 2: Convert to fraction form
    28,504.56/39,338.73 = 15,931.74/x
  3. Step 3: Cross multiply
    28,504.56x = 39,338.73 × 15,931.74
  4. Step 4: Simplify right side
    28,504.56x = 626,734,418.29
  5. Step 5: Solve for x
    x = 626,734,418.29/28,504.56
  6. Step 6: Final answer
    x = 21,987.16

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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.