Home / 20,173,126.86-30,259,586.16-7,878,337.74

Finding the Fourth Proportional to 20,173,126.86, 30,259,586.16 and 7,878,337.74

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Solution

The fourth proportional to 20,173,126.86, 30,259,586.16 and 7,878,337.74 is: 11,817,465.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,173,126.86 : 30,259,586.16 = 7,878,337.74 : x
  2. Step 2: Convert to fraction form
    20,173,126.86/30,259,586.16 = 7,878,337.74/x
  3. Step 3: Cross multiply
    20,173,126.86x = 30,259,586.16 × 7,878,337.74
  4. Step 4: Simplify right side
    20,173,126.86x = 238,395,239,641,109.69
  5. Step 5: Solve for x
    x = 238,395,239,641,109.69/20,173,126.86
  6. Step 6: Final answer
    x = 11,817,465.94

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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.