Home / 18,779.08-28,166.44-4,929.16

Finding the Fourth Proportional to 18,779.08, 28,166.44 and 4,929.16

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Solution

The fourth proportional to 18,779.08, 28,166.44 and 4,929.16 is: 7,393.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,779.08 : 28,166.44 = 4,929.16 : x
  2. Step 2: Convert to fraction form
    18,779.08/28,166.44 = 4,929.16/x
  3. Step 3: Cross multiply
    18,779.08x = 28,166.44 × 4,929.16
  4. Step 4: Simplify right side
    18,779.08x = 138,836,889.39
  5. Step 5: Solve for x
    x = 138,836,889.39/18,779.08
  6. Step 6: Final answer
    x = 7,393.17

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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.