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Finding the Fourth Proportional to 15,800.15, 21,802.34 and 8,726.15

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Solution

The fourth proportional to 15,800.15, 21,802.34 and 8,726.15 is: 12,041.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,800.15 : 21,802.34 = 8,726.15 : x
  2. Step 2: Convert to fraction form
    15,800.15/21,802.34 = 8,726.15/x
  3. Step 3: Cross multiply
    15,800.15x = 21,802.34 × 8,726.15
  4. Step 4: Simplify right side
    15,800.15x = 190,250,336.55
  5. Step 5: Solve for x
    x = 190,250,336.55/15,800.15
  6. Step 6: Final answer
    x = 12,041.05

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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.