Home / 13,153,178.10-18,151,379.37-7,720,670.10

Finding the Fourth Proportional to 13,153,178.10, 18,151,379.37 and 7,720,670.10

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Solution

The fourth proportional to 13,153,178.10, 18,151,379.37 and 7,720,670.10 is: 10,654,520.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,153,178.10 : 18,151,379.37 = 7,720,670.10 : x
  2. Step 2: Convert to fraction form
    13,153,178.10/18,151,379.37 = 7,720,670.10/x
  3. Step 3: Cross multiply
    13,153,178.10x = 18,151,379.37 × 7,720,670.10
  4. Step 4: Simplify right side
    13,153,178.10x = 140,140,811,975,715.84
  5. Step 5: Solve for x
    x = 140,140,811,975,715.84/13,153,178.10
  6. Step 6: Final answer
    x = 10,654,520.98

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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.