Home / 13,008.40-19,507.72-4,122.70

Finding the Fourth Proportional to 13,008.40, 19,507.72 and 4,122.70

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Solution

The fourth proportional to 13,008.40, 19,507.72 and 4,122.70 is: 6,182.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,008.40 : 19,507.72 = 4,122.70 : x
  2. Step 2: Convert to fraction form
    13,008.40/19,507.72 = 4,122.70/x
  3. Step 3: Cross multiply
    13,008.40x = 19,507.72 × 4,122.70
  4. Step 4: Simplify right side
    13,008.40x = 80,424,477.24
  5. Step 5: Solve for x
    x = 80,424,477.24/13,008.40
  6. Step 6: Final answer
    x = 6,182.50

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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.