Home / 28,508.96-42,740.40-11,881.52

Finding the Fourth Proportional to 28,508.96, 42,740.40 and 11,881.52

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Solution

The fourth proportional to 28,508.96, 42,740.40 and 11,881.52 is: 17,812.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,508.96 : 42,740.40 = 11,881.52 : x
  2. Step 2: Convert to fraction form
    28,508.96/42,740.40 = 11,881.52/x
  3. Step 3: Cross multiply
    28,508.96x = 42,740.40 × 11,881.52
  4. Step 4: Simplify right side
    28,508.96x = 507,820,917.41
  5. Step 5: Solve for x
    x = 507,820,917.41/28,508.96
  6. Step 6: Final answer
    x = 17,812.68

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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.