Home / 28,499.38-42,749.67-9,779.33

Finding the Fourth Proportional to 28,499.38, 42,749.67 and 9,779.33

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Solution

The fourth proportional to 28,499.38, 42,749.67 and 9,779.33 is: 14,669.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,499.38 : 42,749.67 = 9,779.33 : x
  2. Step 2: Convert to fraction form
    28,499.38/42,749.67 = 9,779.33/x
  3. Step 3: Cross multiply
    28,499.38x = 42,749.67 × 9,779.33
  4. Step 4: Simplify right side
    28,499.38x = 418,063,130.32
  5. Step 5: Solve for x
    x = 418,063,130.32/28,499.38
  6. Step 6: Final answer
    x = 14,669.20

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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.