Home / 15,458.95-21,334.18-9,791.63

Finding the Fourth Proportional to 15,458.95, 21,334.18 and 9,791.63

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Solution

The fourth proportional to 15,458.95, 21,334.18 and 9,791.63 is: 13,512.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,458.95 : 21,334.18 = 9,791.63 : x
  2. Step 2: Convert to fraction form
    15,458.95/21,334.18 = 9,791.63/x
  3. Step 3: Cross multiply
    15,458.95x = 21,334.18 × 9,791.63
  4. Step 4: Simplify right side
    15,458.95x = 208,896,396.91
  5. Step 5: Solve for x
    x = 208,896,396.91/15,458.95
  6. Step 6: Final answer
    x = 13,512.97

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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.