Home / 21,168.86-29,210.84-12,669.26

Finding the Fourth Proportional to 21,168.86, 29,210.84 and 12,669.26

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Solution

The fourth proportional to 21,168.86, 29,210.84 and 12,669.26 is: 17,482.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,168.86 : 29,210.84 = 12,669.26 : x
  2. Step 2: Convert to fraction form
    21,168.86/29,210.84 = 12,669.26/x
  3. Step 3: Cross multiply
    21,168.86x = 29,210.84 × 12,669.26
  4. Step 4: Simplify right side
    21,168.86x = 370,079,726.78
  5. Step 5: Solve for x
    x = 370,079,726.78/21,168.86
  6. Step 6: Final answer
    x = 17,482.27

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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.