Home / 15,557.82-21,470.31-8,484.63

Finding the Fourth Proportional to 15,557.82, 21,470.31 and 8,484.63

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Solution

The fourth proportional to 15,557.82, 21,470.31 and 8,484.63 is: 11,709.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,557.82 : 21,470.31 = 8,484.63 : x
  2. Step 2: Convert to fraction form
    15,557.82/21,470.31 = 8,484.63/x
  3. Step 3: Cross multiply
    15,557.82x = 21,470.31 × 8,484.63
  4. Step 4: Simplify right side
    15,557.82x = 182,167,636.34
  5. Step 5: Solve for x
    x = 182,167,636.34/15,557.82
  6. Step 6: Final answer
    x = 11,709.07

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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.