Home / 12,483.90-17,231.40-8,238.06

Finding the Fourth Proportional to 12,483.90, 17,231.40 and 8,238.06

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Solution

The fourth proportional to 12,483.90, 17,231.40 and 8,238.06 is: 11,370.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,483.90 : 17,231.40 = 8,238.06 : x
  2. Step 2: Convert to fraction form
    12,483.90/17,231.40 = 8,238.06/x
  3. Step 3: Cross multiply
    12,483.90x = 17,231.40 × 8,238.06
  4. Step 4: Simplify right side
    12,483.90x = 141,953,307.08
  5. Step 5: Solve for x
    x = 141,953,307.08/12,483.90
  6. Step 6: Final answer
    x = 11,370.91

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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.