Home / 31,728.51-47,580.46-16,929.35

Finding the Fourth Proportional to 31,728.51, 47,580.46 and 16,929.35

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Solution

The fourth proportional to 31,728.51, 47,580.46 and 16,929.35 is: 25,387.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,728.51 : 47,580.46 = 16,929.35 : x
  2. Step 2: Convert to fraction form
    31,728.51/47,580.46 = 16,929.35/x
  3. Step 3: Cross multiply
    31,728.51x = 47,580.46 × 16,929.35
  4. Step 4: Simplify right side
    31,728.51x = 805,506,521.57
  5. Step 5: Solve for x
    x = 805,506,521.57/31,728.51
  6. Step 6: Final answer
    x = 25,387.47

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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.