Home / 28,306.02-42,442.56-20,814.06

Finding the Fourth Proportional to 28,306.02, 42,442.56 and 20,814.06

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Solution

The fourth proportional to 28,306.02, 42,442.56 and 20,814.06 is: 31,208.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,306.02 : 42,442.56 = 20,814.06 : x
  2. Step 2: Convert to fraction form
    28,306.02/42,442.56 = 20,814.06/x
  3. Step 3: Cross multiply
    28,306.02x = 42,442.56 × 20,814.06
  4. Step 4: Simplify right side
    28,306.02x = 883,401,990.39
  5. Step 5: Solve for x
    x = 883,401,990.39/28,306.02
  6. Step 6: Final answer
    x = 31,208.98

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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.