Home / 12,653,999.70-18,980,999.55-8,349,327.60

Finding the Fourth Proportional to 12,653,999.70, 18,980,999.55 and 8,349,327.60

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Solution

The fourth proportional to 12,653,999.70, 18,980,999.55 and 8,349,327.60 is: 12,523,991.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,653,999.70 : 18,980,999.55 = 8,349,327.60 : x
  2. Step 2: Convert to fraction form
    12,653,999.70/18,980,999.55 = 8,349,327.60/x
  3. Step 3: Cross multiply
    12,653,999.70x = 18,980,999.55 × 8,349,327.60
  4. Step 4: Simplify right side
    12,653,999.70x = 158,478,583,418,402.59
  5. Step 5: Solve for x
    x = 158,478,583,418,402.59/12,653,999.70
  6. Step 6: Final answer
    x = 12,523,991.40

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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.