Home / 30,515.12-45,646.29-28,648.88

Finding the Fourth Proportional to 30,515.12, 45,646.29 and 28,648.88

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Solution

The fourth proportional to 30,515.12, 45,646.29 and 28,648.88 is: 42,854.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,515.12 : 45,646.29 = 28,648.88 : x
  2. Step 2: Convert to fraction form
    30,515.12/45,646.29 = 28,648.88/x
  3. Step 3: Cross multiply
    30,515.12x = 45,646.29 × 28,648.88
  4. Step 4: Simplify right side
    30,515.12x = 1,307,714,856.42
  5. Step 5: Solve for x
    x = 1,307,714,856.42/30,515.12
  6. Step 6: Final answer
    x = 42,854.66

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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.