Home / 28,417.14-42,612.75-18,405.54

Finding the Fourth Proportional to 28,417.14, 42,612.75 and 18,405.54

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Solution

The fourth proportional to 28,417.14, 42,612.75 and 18,405.54 is: 27,599.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,417.14 : 42,612.75 = 18,405.54 : x
  2. Step 2: Convert to fraction form
    28,417.14/42,612.75 = 18,405.54/x
  3. Step 3: Cross multiply
    28,417.14x = 42,612.75 × 18,405.54
  4. Step 4: Simplify right side
    28,417.14x = 784,310,674.64
  5. Step 5: Solve for x
    x = 784,310,674.64/28,417.14
  6. Step 6: Final answer
    x = 27,599.92

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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.