Home / 30,488.14-42,077.49-18,550.76

Finding the Fourth Proportional to 30,488.14, 42,077.49 and 18,550.76

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Solution

The fourth proportional to 30,488.14, 42,077.49 and 18,550.76 is: 25,602.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,488.14 : 42,077.49 = 18,550.76 : x
  2. Step 2: Convert to fraction form
    30,488.14/42,077.49 = 18,550.76/x
  3. Step 3: Cross multiply
    30,488.14x = 42,077.49 × 18,550.76
  4. Step 4: Simplify right side
    30,488.14x = 780,569,418.39
  5. Step 5: Solve for x
    x = 780,569,418.39/30,488.14
  6. Step 6: Final answer
    x = 25,602.40

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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.