Home / 30,155.61-45,304.09-28,451.47

Finding the Fourth Proportional to 30,155.61, 45,304.09 and 28,451.47

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Solution

The fourth proportional to 30,155.61, 45,304.09 and 28,451.47 is: 42,743.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,155.61 : 45,304.09 = 28,451.47 : x
  2. Step 2: Convert to fraction form
    30,155.61/45,304.09 = 28,451.47/x
  3. Step 3: Cross multiply
    30,155.61x = 45,304.09 × 28,451.47
  4. Step 4: Simplify right side
    30,155.61x = 1,288,968,225.61
  5. Step 5: Solve for x
    x = 1,288,968,225.61/30,155.61
  6. Step 6: Final answer
    x = 42,743.90

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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.