Home / 18,140,678.50-25,034,131.47-9,991,916.50

Finding the Fourth Proportional to 18,140,678.50, 25,034,131.47 and 9,991,916.50

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Solution

The fourth proportional to 18,140,678.50, 25,034,131.47 and 9,991,916.50 is: 13,788,842.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,140,678.50 : 25,034,131.47 = 9,991,916.50 : x
  2. Step 2: Convert to fraction form
    18,140,678.50/25,034,131.47 = 9,991,916.50/x
  3. Step 3: Cross multiply
    18,140,678.50x = 25,034,131.47 × 9,991,916.50
  4. Step 4: Simplify right side
    18,140,678.50x = 250,138,951,298,262.25
  5. Step 5: Solve for x
    x = 250,138,951,298,262.25/18,140,678.50
  6. Step 6: Final answer
    x = 13,788,842.09

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.