Home / 21,052.90-29,055.04-15,738.50

Finding the Fourth Proportional to 21,052.90, 29,055.04 and 15,738.50

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Solution

The fourth proportional to 21,052.90, 29,055.04 and 15,738.50 is: 21,720.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,052.90 : 29,055.04 = 15,738.50 : x
  2. Step 2: Convert to fraction form
    21,052.90/29,055.04 = 15,738.50/x
  3. Step 3: Cross multiply
    21,052.90x = 29,055.04 × 15,738.50
  4. Step 4: Simplify right side
    21,052.90x = 457,282,747.04
  5. Step 5: Solve for x
    x = 457,282,747.04/21,052.90
  6. Step 6: Final answer
    x = 21,720.65

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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.