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Finding the Fourth Proportional to 15,937.63, 21,994.34 and 8,864.51

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Solution

The fourth proportional to 15,937.63, 21,994.34 and 8,864.51 is: 12,233.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,937.63 : 21,994.34 = 8,864.51 : x
  2. Step 2: Convert to fraction form
    15,937.63/21,994.34 = 8,864.51/x
  3. Step 3: Cross multiply
    15,937.63x = 21,994.34 × 8,864.51
  4. Step 4: Simplify right side
    15,937.63x = 194,968,892.58
  5. Step 5: Solve for x
    x = 194,968,892.58/15,937.63
  6. Step 6: Final answer
    x = 12,233.24

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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.