Home / 18,900.57-28,368.38-9,547.15

Finding the Fourth Proportional to 18,900.57, 28,368.38 and 9,547.15

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Solution

The fourth proportional to 18,900.57, 28,368.38 and 9,547.15 is: 14,329.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,900.57 : 28,368.38 = 9,547.15 : x
  2. Step 2: Convert to fraction form
    18,900.57/28,368.38 = 9,547.15/x
  3. Step 3: Cross multiply
    18,900.57x = 28,368.38 × 9,547.15
  4. Step 4: Simplify right side
    18,900.57x = 270,837,179.12
  5. Step 5: Solve for x
    x = 270,837,179.12/18,900.57
  6. Step 6: Final answer
    x = 14,329.58

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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.