Home / 23,114.70-31,897.80-13,686.30

Finding the Fourth Proportional to 23,114.70, 31,897.80 and 13,686.30

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Solution

The fourth proportional to 23,114.70, 31,897.80 and 13,686.30 is: 18,886.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    23,114.70 : 31,897.80 = 13,686.30 : x
  2. Step 2: Convert to fraction form
    23,114.70/31,897.80 = 13,686.30/x
  3. Step 3: Cross multiply
    23,114.70x = 31,897.80 × 13,686.30
  4. Step 4: Simplify right side
    23,114.70x = 436,562,860.14
  5. Step 5: Solve for x
    x = 436,562,860.14/23,114.70
  6. Step 6: Final answer
    x = 18,886.81

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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.