Home / 12,247.26-16,905-7,211.08

Finding the Fourth Proportional to 12,247.26, 16,905 and 7,211.08

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Solution

The fourth proportional to 12,247.26, 16,905 and 7,211.08 is: 9,953.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,247.26 : 16,905 = 7,211.08 : x
  2. Step 2: Convert to fraction form
    12,247.26/16,905 = 7,211.08/x
  3. Step 3: Cross multiply
    12,247.26x = 16,905 × 7,211.08
  4. Step 4: Simplify right side
    12,247.26x = 121,903,307.40
  5. Step 5: Solve for x
    x = 121,903,307.40/12,247.26
  6. Step 6: Final answer
    x = 9,953.52

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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.