Home / 28,580.33-42,875.04-11,931.79

Finding the Fourth Proportional to 28,580.33, 42,875.04 and 11,931.79

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Solution

The fourth proportional to 28,580.33, 42,875.04 and 11,931.79 is: 17,899.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,580.33 : 42,875.04 = 11,931.79 : x
  2. Step 2: Convert to fraction form
    28,580.33/42,875.04 = 11,931.79/x
  3. Step 3: Cross multiply
    28,580.33x = 42,875.04 × 11,931.79
  4. Step 4: Simplify right side
    28,580.33x = 511,575,973.52
  5. Step 5: Solve for x
    x = 511,575,973.52/28,580.33
  6. Step 6: Final answer
    x = 17,899.58

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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.