Home / 21,274.04-29,352.27-13,720.69

Finding the Fourth Proportional to 21,274.04, 29,352.27 and 13,720.69

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Solution

The fourth proportional to 21,274.04, 29,352.27 and 13,720.69 is: 18,930.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,274.04 : 29,352.27 = 13,720.69 : x
  2. Step 2: Convert to fraction form
    21,274.04/29,352.27 = 13,720.69/x
  3. Step 3: Cross multiply
    21,274.04x = 29,352.27 × 13,720.69
  4. Step 4: Simplify right side
    21,274.04x = 402,733,485.61
  5. Step 5: Solve for x
    x = 402,733,485.61/21,274.04
  6. Step 6: Final answer
    x = 18,930.75

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.