Home / 28,522.80-42,784.32-18,724.08

Finding the Fourth Proportional to 28,522.80, 42,784.32 and 18,724.08

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Solution

The fourth proportional to 28,522.80, 42,784.32 and 18,724.08 is: 28,086.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,522.80 : 42,784.32 = 18,724.08 : x
  2. Step 2: Convert to fraction form
    28,522.80/42,784.32 = 18,724.08/x
  3. Step 3: Cross multiply
    28,522.80x = 42,784.32 × 18,724.08
  4. Step 4: Simplify right side
    28,522.80x = 801,097,030.43
  5. Step 5: Solve for x
    x = 801,097,030.43/28,522.80
  6. Step 6: Final answer
    x = 28,086.20

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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.