Home / 19,530.40-29,281.20-13,274.80

Finding the Fourth Proportional to 19,530.40, 29,281.20 and 13,274.80

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Solution

The fourth proportional to 19,530.40, 29,281.20 and 13,274.80 is: 19,902.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,530.40 : 29,281.20 = 13,274.80 : x
  2. Step 2: Convert to fraction form
    19,530.40/29,281.20 = 13,274.80/x
  3. Step 3: Cross multiply
    19,530.40x = 29,281.20 × 13,274.80
  4. Step 4: Simplify right side
    19,530.40x = 388,702,073.76
  5. Step 5: Solve for x
    x = 388,702,073.76/19,530.40
  6. Step 6: Final answer
    x = 19,902.41

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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.