Home / 21,041.32-29,051.70-13,087.12

Finding the Fourth Proportional to 21,041.32, 29,051.70 and 13,087.12

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Solution

The fourth proportional to 21,041.32, 29,051.70 and 13,087.12 is: 18,069.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,041.32 : 29,051.70 = 13,087.12 : x
  2. Step 2: Convert to fraction form
    21,041.32/29,051.70 = 13,087.12/x
  3. Step 3: Cross multiply
    21,041.32x = 29,051.70 × 13,087.12
  4. Step 4: Simplify right side
    21,041.32x = 380,203,084.10
  5. Step 5: Solve for x
    x = 380,203,084.10/21,041.32
  6. Step 6: Final answer
    x = 18,069.36

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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.