Home / 12,127,832.70-18,191,749.05-7,076,543.10

Finding the Fourth Proportional to 12,127,832.70, 18,191,749.05 and 7,076,543.10

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Solution

The fourth proportional to 12,127,832.70, 18,191,749.05 and 7,076,543.10 is: 10,614,814.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,127,832.70 : 18,191,749.05 = 7,076,543.10 : x
  2. Step 2: Convert to fraction form
    12,127,832.70/18,191,749.05 = 7,076,543.10/x
  3. Step 3: Cross multiply
    12,127,832.70x = 18,191,749.05 × 7,076,543.10
  4. Step 4: Simplify right side
    12,127,832.70x = 128,734,696,216,709.05
  5. Step 5: Solve for x
    x = 128,734,696,216,709.05/12,127,832.70
  6. Step 6: Final answer
    x = 10,614,814.65

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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.