Home / 15,406.54-21,256.06-12,166.07

Finding the Fourth Proportional to 15,406.54, 21,256.06 and 12,166.07

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Solution

The fourth proportional to 15,406.54, 21,256.06 and 12,166.07 is: 16,785.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,406.54 : 21,256.06 = 12,166.07 : x
  2. Step 2: Convert to fraction form
    15,406.54/21,256.06 = 12,166.07/x
  3. Step 3: Cross multiply
    15,406.54x = 21,256.06 × 12,166.07
  4. Step 4: Simplify right side
    15,406.54x = 258,602,713.88
  5. Step 5: Solve for x
    x = 258,602,713.88/15,406.54
  6. Step 6: Final answer
    x = 16,785.26

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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.