Home / 28,440.49-42,668.93-8,721.95

Finding the Fourth Proportional to 28,440.49, 42,668.93 and 8,721.95

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Solution

The fourth proportional to 28,440.49, 42,668.93 and 8,721.95 is: 13,085.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,440.49 : 42,668.93 = 8,721.95 : x
  2. Step 2: Convert to fraction form
    28,440.49/42,668.93 = 8,721.95/x
  3. Step 3: Cross multiply
    28,440.49x = 42,668.93 × 8,721.95
  4. Step 4: Simplify right side
    28,440.49x = 372,156,060.67
  5. Step 5: Solve for x
    x = 372,156,060.67/28,440.49
  6. Step 6: Final answer
    x = 13,085.43

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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.