Home / 13,112.08-19,574.63-12,650.75

Finding the Fourth Proportional to 13,112.08, 19,574.63 and 12,650.75

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Solution

The fourth proportional to 13,112.08, 19,574.63 and 12,650.75 is: 18,885.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,112.08 : 19,574.63 = 12,650.75 : x
  2. Step 2: Convert to fraction form
    13,112.08/19,574.63 = 12,650.75/x
  3. Step 3: Cross multiply
    13,112.08x = 19,574.63 × 12,650.75
  4. Step 4: Simplify right side
    13,112.08x = 247,633,710.19
  5. Step 5: Solve for x
    x = 247,633,710.19/13,112.08
  6. Step 6: Final answer
    x = 18,885.92

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.