Home / 15,730.30-21,708.04-8,657.02

Finding the Fourth Proportional to 15,730.30, 21,708.04 and 8,657.02

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Solution

The fourth proportional to 15,730.30, 21,708.04 and 8,657.02 is: 11,946.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,730.30 : 21,708.04 = 8,657.02 : x
  2. Step 2: Convert to fraction form
    15,730.30/21,708.04 = 8,657.02/x
  3. Step 3: Cross multiply
    15,730.30x = 21,708.04 × 8,657.02
  4. Step 4: Simplify right side
    15,730.30x = 187,926,936.44
  5. Step 5: Solve for x
    x = 187,926,936.44/15,730.30
  6. Step 6: Final answer
    x = 11,946.81

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.