Home / 12,985.52-17,905.93-8,263.76

Finding the Fourth Proportional to 12,985.52, 17,905.93 and 8,263.76

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Solution

The fourth proportional to 12,985.52, 17,905.93 and 8,263.76 is: 11,395.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,985.52 : 17,905.93 = 8,263.76 : x
  2. Step 2: Convert to fraction form
    12,985.52/17,905.93 = 8,263.76/x
  3. Step 3: Cross multiply
    12,985.52x = 17,905.93 × 8,263.76
  4. Step 4: Simplify right side
    12,985.52x = 147,970,197.91
  5. Step 5: Solve for x
    x = 147,970,197.91/12,985.52
  6. Step 6: Final answer
    x = 11,395.02

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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.