Home / 15,473.63-21,353.64-8,400.05

Finding the Fourth Proportional to 15,473.63, 21,353.64 and 8,400.05

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Solution

The fourth proportional to 15,473.63, 21,353.64 and 8,400.05 is: 11,592.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,473.63 : 21,353.64 = 8,400.05 : x
  2. Step 2: Convert to fraction form
    15,473.63/21,353.64 = 8,400.05/x
  3. Step 3: Cross multiply
    15,473.63x = 21,353.64 × 8,400.05
  4. Step 4: Simplify right side
    15,473.63x = 179,371,536.91
  5. Step 5: Solve for x
    x = 179,371,536.91/15,473.63
  6. Step 6: Final answer
    x = 11,592.08

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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.