Home / 15,886.07-21,945.59-12,695.19

Finding the Fourth Proportional to 15,886.07, 21,945.59 and 12,695.19

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Solution

The fourth proportional to 15,886.07, 21,945.59 and 12,695.19 is: 17,537.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,886.07 : 21,945.59 = 12,695.19 : x
  2. Step 2: Convert to fraction form
    15,886.07/21,945.59 = 12,695.19/x
  3. Step 3: Cross multiply
    15,886.07x = 21,945.59 × 12,695.19
  4. Step 4: Simplify right side
    15,886.07x = 278,603,407.96
  5. Step 5: Solve for x
    x = 278,603,407.96/15,886.07
  6. Step 6: Final answer
    x = 17,537.59

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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.