Home / 18,640,420.96-25,710,529.86-12,442,342.60

Finding the Fourth Proportional to 18,640,420.96, 25,710,529.86 and 12,442,342.60

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Solution

The fourth proportional to 18,640,420.96, 25,710,529.86 and 12,442,342.60 is: 17,161,587.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,640,420.96 : 25,710,529.86 = 12,442,342.60 : x
  2. Step 2: Convert to fraction form
    18,640,420.96/25,710,529.86 = 12,442,342.60/x
  3. Step 3: Cross multiply
    18,640,420.96x = 25,710,529.86 × 12,442,342.60
  4. Step 4: Simplify right side
    18,640,420.96x = 319,899,220,945,650
  5. Step 5: Solve for x
    x = 319,899,220,945,650/18,640,420.96
  6. Step 6: Final answer
    x = 17,161,587.80

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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.