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Finding the Fourth Proportional to 15,574.78, 21,493.11 and 8,501.05

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Solution

The fourth proportional to 15,574.78, 21,493.11 and 8,501.05 is: 11,731.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,574.78 : 21,493.11 = 8,501.05 : x
  2. Step 2: Convert to fraction form
    15,574.78/21,493.11 = 8,501.05/x
  3. Step 3: Cross multiply
    15,574.78x = 21,493.11 × 8,501.05
  4. Step 4: Simplify right side
    15,574.78x = 182,714,002.77
  5. Step 5: Solve for x
    x = 182,714,002.77/15,574.78
  6. Step 6: Final answer
    x = 11,731.40

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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.