Home / 13,069.20-19,603.80-8,672.40

Finding the Fourth Proportional to 13,069.20, 19,603.80 and 8,672.40

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Solution

The fourth proportional to 13,069.20, 19,603.80 and 8,672.40 is: 13,008.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,069.20 : 19,603.80 = 8,672.40 : x
  2. Step 2: Convert to fraction form
    13,069.20/19,603.80 = 8,672.40/x
  3. Step 3: Cross multiply
    13,069.20x = 19,603.80 × 8,672.40
  4. Step 4: Simplify right side
    13,069.20x = 170,011,995.12
  5. Step 5: Solve for x
    x = 170,011,995.12/13,069.20
  6. Step 6: Final answer
    x = 13,008.60

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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.