Home / 26,560.45-39,865.29-13,421.98

Finding the Fourth Proportional to 26,560.45, 39,865.29 and 13,421.98

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Solution

The fourth proportional to 26,560.45, 39,865.29 and 13,421.98 is: 20,145.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,560.45 : 39,865.29 = 13,421.98 : x
  2. Step 2: Convert to fraction form
    26,560.45/39,865.29 = 13,421.98/x
  3. Step 3: Cross multiply
    26,560.45x = 39,865.29 × 13,421.98
  4. Step 4: Simplify right side
    26,560.45x = 535,071,125.07
  5. Step 5: Solve for x
    x = 535,071,125.07/26,560.45
  6. Step 6: Final answer
    x = 20,145.41

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.