Home / 21,069.49-29,076.00-11,509.51

Finding the Fourth Proportional to 21,069.49, 29,076.00 and 11,509.51

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Solution

The fourth proportional to 21,069.49, 29,076.00 and 11,509.51 is: 15,883.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,069.49 : 29,076.00 = 11,509.51 : x
  2. Step 2: Convert to fraction form
    21,069.49/29,076.00 = 11,509.51/x
  3. Step 3: Cross multiply
    21,069.49x = 29,076.00 × 11,509.51
  4. Step 4: Simplify right side
    21,069.49x = 334,650,565.57
  5. Step 5: Solve for x
    x = 334,650,565.57/21,069.49
  6. Step 6: Final answer
    x = 15,883.18

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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.