Home / 15,730.44-21,707.88-8,656.72

Finding the Fourth Proportional to 15,730.44, 21,707.88 and 8,656.72

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Solution

The fourth proportional to 15,730.44, 21,707.88 and 8,656.72 is: 11,946.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,730.44 : 21,707.88 = 8,656.72 : x
  2. Step 2: Convert to fraction form
    15,730.44/21,707.88 = 8,656.72/x
  3. Step 3: Cross multiply
    15,730.44x = 21,707.88 × 8,656.72
  4. Step 4: Simplify right side
    15,730.44x = 187,919,038.95
  5. Step 5: Solve for x
    x = 187,919,038.95/15,730.44
  6. Step 6: Final answer
    x = 11,946.20

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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.