Home / 30,620.76-45,942-13,091.92

Finding the Fourth Proportional to 30,620.76, 45,942 and 13,091.92

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Solution

The fourth proportional to 30,620.76, 45,942 and 13,091.92 is: 19,642.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,620.76 : 45,942 = 13,091.92 : x
  2. Step 2: Convert to fraction form
    30,620.76/45,942 = 13,091.92/x
  3. Step 3: Cross multiply
    30,620.76x = 45,942 × 13,091.92
  4. Step 4: Simplify right side
    30,620.76x = 601,468,988.64
  5. Step 5: Solve for x
    x = 601,468,988.64/30,620.76
  6. Step 6: Final answer
    x = 19,642.52

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.