Home / 28,623.65-39,503.01-15,880.95

Finding the Fourth Proportional to 28,623.65, 39,503.01 and 15,880.95

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Solution

The fourth proportional to 28,623.65, 39,503.01 and 15,880.95 is: 21,917.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,623.65 : 39,503.01 = 15,880.95 : x
  2. Step 2: Convert to fraction form
    28,623.65/39,503.01 = 15,880.95/x
  3. Step 3: Cross multiply
    28,623.65x = 39,503.01 × 15,880.95
  4. Step 4: Simplify right side
    28,623.65x = 627,345,326.66
  5. Step 5: Solve for x
    x = 627,345,326.66/28,623.65
  6. Step 6: Final answer
    x = 21,917.03

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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.