Home / 15,638.34-21,580.23-9,670.66

Finding the Fourth Proportional to 15,638.34, 21,580.23 and 9,670.66

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Solution

The fourth proportional to 15,638.34, 21,580.23 and 9,670.66 is: 13,345.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,638.34 : 21,580.23 = 9,670.66 : x
  2. Step 2: Convert to fraction form
    15,638.34/21,580.23 = 9,670.66/x
  3. Step 3: Cross multiply
    15,638.34x = 21,580.23 × 9,670.66
  4. Step 4: Simplify right side
    15,638.34x = 208,695,067.05
  5. Step 5: Solve for x
    x = 208,695,067.05/15,638.34
  6. Step 6: Final answer
    x = 13,345.09

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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.