Home / 21,074.04-29,087.10-13,518.36

Finding the Fourth Proportional to 21,074.04, 29,087.10 and 13,518.36

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Solution

The fourth proportional to 21,074.04, 29,087.10 and 13,518.36 is: 18,658.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,074.04 : 29,087.10 = 13,518.36 : x
  2. Step 2: Convert to fraction form
    21,074.04/29,087.10 = 13,518.36/x
  3. Step 3: Cross multiply
    21,074.04x = 29,087.10 × 13,518.36
  4. Step 4: Simplify right side
    21,074.04x = 393,209,889.16
  5. Step 5: Solve for x
    x = 393,209,889.16/21,074.04
  6. Step 6: Final answer
    x = 18,658.50

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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.