Home / 28,623.85-42,931.18-7,842.49

Finding the Fourth Proportional to 28,623.85, 42,931.18 and 7,842.49

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Solution

The fourth proportional to 28,623.85, 42,931.18 and 7,842.49 is: 11,762.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,623.85 : 42,931.18 = 7,842.49 : x
  2. Step 2: Convert to fraction form
    28,623.85/42,931.18 = 7,842.49/x
  3. Step 3: Cross multiply
    28,623.85x = 42,931.18 × 7,842.49
  4. Step 4: Simplify right side
    28,623.85x = 336,687,349.84
  5. Step 5: Solve for x
    x = 336,687,349.84/28,623.85
  6. Step 6: Final answer
    x = 11,762.48

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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.