Home / 28,583.04-42,892.80-20,772.48

Finding the Fourth Proportional to 28,583.04, 42,892.80 and 20,772.48

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Solution

The fourth proportional to 28,583.04, 42,892.80 and 20,772.48 is: 31,171.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,583.04 : 42,892.80 = 20,772.48 : x
  2. Step 2: Convert to fraction form
    28,583.04/42,892.80 = 20,772.48/x
  3. Step 3: Cross multiply
    28,583.04x = 42,892.80 × 20,772.48
  4. Step 4: Simplify right side
    28,583.04x = 890,989,830.14
  5. Step 5: Solve for x
    x = 890,989,830.14/28,583.04
  6. Step 6: Final answer
    x = 31,171.98

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1.5x scale

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.