Home / 15,730.62-21,707.72-8,657.02

Finding the Fourth Proportional to 15,730.62, 21,707.72 and 8,657.02

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Solution

The fourth proportional to 15,730.62, 21,707.72 and 8,657.02 is: 11,946.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,730.62 : 21,707.72 = 8,657.02 : x
  2. Step 2: Convert to fraction form
    15,730.62/21,707.72 = 8,657.02/x
  3. Step 3: Cross multiply
    15,730.62x = 21,707.72 × 8,657.02
  4. Step 4: Simplify right side
    15,730.62x = 187,924,122.91
  5. Step 5: Solve for x
    x = 187,924,122.91/15,730.62
  6. Step 6: Final answer
    x = 11,946.39

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1.5x scale

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.