Home / 28,204.65-42,307.02-11,561.72

Finding the Fourth Proportional to 28,204.65, 42,307.02 and 11,561.72

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Solution

The fourth proportional to 28,204.65, 42,307.02 and 11,561.72 is: 17,342.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,204.65 : 42,307.02 = 11,561.72 : x
  2. Step 2: Convert to fraction form
    28,204.65/42,307.02 = 11,561.72/x
  3. Step 3: Cross multiply
    28,204.65x = 42,307.02 × 11,561.72
  4. Step 4: Simplify right side
    28,204.65x = 489,141,707.74
  5. Step 5: Solve for x
    x = 489,141,707.74/28,204.65
  6. Step 6: Final answer
    x = 17,342.59

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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.