Home / 28,526.78-42,754.53-13,731.77

Finding the Fourth Proportional to 28,526.78, 42,754.53 and 13,731.77

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Solution

The fourth proportional to 28,526.78, 42,754.53 and 13,731.77 is: 20,580.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,526.78 : 42,754.53 = 13,731.77 : x
  2. Step 2: Convert to fraction form
    28,526.78/42,754.53 = 13,731.77/x
  3. Step 3: Cross multiply
    28,526.78x = 42,754.53 × 13,731.77
  4. Step 4: Simplify right side
    28,526.78x = 587,095,372.42
  5. Step 5: Solve for x
    x = 587,095,372.42/28,526.78
  6. Step 6: Final answer
    x = 20,580.50

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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.