Home / 18,890.28-28,340.46-9,029.16

Finding the Fourth Proportional to 18,890.28, 28,340.46 and 9,029.16

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Solution

The fourth proportional to 18,890.28, 28,340.46 and 9,029.16 is: 13,546.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,890.28 : 28,340.46 = 9,029.16 : x
  2. Step 2: Convert to fraction form
    18,890.28/28,340.46 = 9,029.16/x
  3. Step 3: Cross multiply
    18,890.28x = 28,340.46 × 9,029.16
  4. Step 4: Simplify right side
    18,890.28x = 255,890,547.81
  5. Step 5: Solve for x
    x = 255,890,547.81/18,890.28
  6. Step 6: Final answer
    x = 13,546.15

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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.