Home / 12,058.32-18,005.40-10,640.91

Finding the Fourth Proportional to 12,058.32, 18,005.40 and 10,640.91

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Solution

The fourth proportional to 12,058.32, 18,005.40 and 10,640.91 is: 15,888.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,058.32 : 18,005.40 = 10,640.91 : x
  2. Step 2: Convert to fraction form
    12,058.32/18,005.40 = 10,640.91/x
  3. Step 3: Cross multiply
    12,058.32x = 18,005.40 × 10,640.91
  4. Step 4: Simplify right side
    12,058.32x = 191,593,840.91
  5. Step 5: Solve for x
    x = 191,593,840.91/12,058.32
  6. Step 6: Final answer
    x = 15,888.93

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.