Home / 21,058.15-29,061.58-12,107.05

Finding the Fourth Proportional to 21,058.15, 29,061.58 and 12,107.05

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Solution

The fourth proportional to 21,058.15, 29,061.58 and 12,107.05 is: 16,708.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,058.15 : 29,061.58 = 12,107.05 : x
  2. Step 2: Convert to fraction form
    21,058.15/29,061.58 = 12,107.05/x
  3. Step 3: Cross multiply
    21,058.15x = 29,061.58 × 12,107.05
  4. Step 4: Simplify right side
    21,058.15x = 351,850,002.14
  5. Step 5: Solve for x
    x = 351,850,002.14/21,058.15
  6. Step 6: Final answer
    x = 16,708.50

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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.