Home / 18,901,390.50-28,352,085.75-5,438,218.50

Finding the Fourth Proportional to 18,901,390.50, 28,352,085.75 and 5,438,218.50

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Solution

The fourth proportional to 18,901,390.50, 28,352,085.75 and 5,438,218.50 is: 8,157,327.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,901,390.50 : 28,352,085.75 = 5,438,218.50 : x
  2. Step 2: Convert to fraction form
    18,901,390.50/28,352,085.75 = 5,438,218.50/x
  3. Step 3: Cross multiply
    18,901,390.50x = 28,352,085.75 × 5,438,218.50
  4. Step 4: Simplify right side
    18,901,390.50x = 154,184,837,239,236.38
  5. Step 5: Solve for x
    x = 154,184,837,239,236.38/18,901,390.50
  6. Step 6: Final answer
    x = 8,157,327.75

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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.