Home / 18,905.08-28,355.46-5,055.16

Finding the Fourth Proportional to 18,905.08, 28,355.46 and 5,055.16

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Solution

The fourth proportional to 18,905.08, 28,355.46 and 5,055.16 is: 7,582.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,905.08 : 28,355.46 = 5,055.16 : x
  2. Step 2: Convert to fraction form
    18,905.08/28,355.46 = 5,055.16/x
  3. Step 3: Cross multiply
    18,905.08x = 28,355.46 × 5,055.16
  4. Step 4: Simplify right side
    18,905.08x = 143,341,387.17
  5. Step 5: Solve for x
    x = 143,341,387.17/18,905.08
  6. Step 6: Final answer
    x = 7,582.16

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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.