Home / 28,526.80-42,790.32-18,728.08

Finding the Fourth Proportional to 28,526.80, 42,790.32 and 18,728.08

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Solution

The fourth proportional to 28,526.80, 42,790.32 and 18,728.08 is: 28,092.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,526.80 : 42,790.32 = 18,728.08 : x
  2. Step 2: Convert to fraction form
    28,526.80/42,790.32 = 18,728.08/x
  3. Step 3: Cross multiply
    28,526.80x = 42,790.32 × 18,728.08
  4. Step 4: Simplify right side
    28,526.80x = 801,380,536.19
  5. Step 5: Solve for x
    x = 801,380,536.19/28,526.80
  6. Step 6: Final answer
    x = 28,092.20

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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.