Home / 28,356.59-42,538.35-12,561.75

Finding the Fourth Proportional to 28,356.59, 42,538.35 and 12,561.75

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Solution

The fourth proportional to 28,356.59, 42,538.35 and 12,561.75 is: 18,844.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,356.59 : 42,538.35 = 12,561.75 : x
  2. Step 2: Convert to fraction form
    28,356.59/42,538.35 = 12,561.75/x
  3. Step 3: Cross multiply
    28,356.59x = 42,538.35 × 12,561.75
  4. Step 4: Simplify right side
    28,356.59x = 534,356,157.79
  5. Step 5: Solve for x
    x = 534,356,157.79/28,356.59
  6. Step 6: Final answer
    x = 18,844.16

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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.