Home / 30,696.24-42,338.14-18,749.76

Finding the Fourth Proportional to 30,696.24, 42,338.14 and 18,749.76

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Solution

The fourth proportional to 30,696.24, 42,338.14 and 18,749.76 is: 25,860.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,696.24 : 42,338.14 = 18,749.76 : x
  2. Step 2: Convert to fraction form
    30,696.24/42,338.14 = 18,749.76/x
  3. Step 3: Cross multiply
    30,696.24x = 42,338.14 × 18,749.76
  4. Step 4: Simplify right side
    30,696.24x = 793,829,963.85
  5. Step 5: Solve for x
    x = 793,829,963.85/30,696.24
  6. Step 6: Final answer
    x = 25,860.82

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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.