Home / 23,058.77-31,820.92-12,987.36

Finding the Fourth Proportional to 23,058.77, 31,820.92 and 12,987.36

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Solution

The fourth proportional to 23,058.77, 31,820.92 and 12,987.36 is: 17,922.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    23,058.77 : 31,820.92 = 12,987.36 : x
  2. Step 2: Convert to fraction form
    23,058.77/31,820.92 = 12,987.36/x
  3. Step 3: Cross multiply
    23,058.77x = 31,820.92 × 12,987.36
  4. Step 4: Simplify right side
    23,058.77x = 413,269,711.10
  5. Step 5: Solve for x
    x = 413,269,711.10/23,058.77
  6. Step 6: Final answer
    x = 17,922.46

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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.