Home / 15,746.55-21,730.20-8,672.93

Finding the Fourth Proportional to 15,746.55, 21,730.20 and 8,672.93

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Solution

The fourth proportional to 15,746.55, 21,730.20 and 8,672.93 is: 11,968.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,746.55 : 21,730.20 = 8,672.93 : x
  2. Step 2: Convert to fraction form
    15,746.55/21,730.20 = 8,672.93/x
  3. Step 3: Cross multiply
    15,746.55x = 21,730.20 × 8,672.93
  4. Step 4: Simplify right side
    15,746.55x = 188,464,503.49
  5. Step 5: Solve for x
    x = 188,464,503.49/15,746.55
  6. Step 6: Final answer
    x = 11,968.62

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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.