Home / 13,530.72-20,275.14-9,378.84

Finding the Fourth Proportional to 13,530.72, 20,275.14 and 9,378.84

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Solution

The fourth proportional to 13,530.72, 20,275.14 and 9,378.84 is: 14,053.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,530.72 : 20,275.14 = 9,378.84 : x
  2. Step 2: Convert to fraction form
    13,530.72/20,275.14 = 9,378.84/x
  3. Step 3: Cross multiply
    13,530.72x = 20,275.14 × 9,378.84
  4. Step 4: Simplify right side
    13,530.72x = 190,157,294.04
  5. Step 5: Solve for x
    x = 190,157,294.04/13,530.72
  6. Step 6: Final answer
    x = 14,053.75

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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.