Home / 12,663.42-18,989.63-4,866.75

Finding the Fourth Proportional to 12,663.42, 18,989.63 and 4,866.75

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Solution

The fourth proportional to 12,663.42, 18,989.63 and 4,866.75 is: 7,298.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,663.42 : 18,989.63 = 4,866.75 : x
  2. Step 2: Convert to fraction form
    12,663.42/18,989.63 = 4,866.75/x
  3. Step 3: Cross multiply
    12,663.42x = 18,989.63 × 4,866.75
  4. Step 4: Simplify right side
    12,663.42x = 92,417,757.47
  5. Step 5: Solve for x
    x = 92,417,757.47/12,663.42
  6. Step 6: Final answer
    x = 7,298.01

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.