Home / 21,153,438.70-29,197,798.86-12,456,655.86

Finding the Fourth Proportional to 21,153,438.70, 29,197,798.86 and 12,456,655.86

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Solution

The fourth proportional to 21,153,438.70, 29,197,798.86 and 12,456,655.86 is: 17,193,749.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,153,438.70 : 29,197,798.86 = 12,456,655.86 : x
  2. Step 2: Convert to fraction form
    21,153,438.70/29,197,798.86 = 12,456,655.86/x
  3. Step 3: Cross multiply
    21,153,438.70x = 29,197,798.86 × 12,456,655.86
  4. Step 4: Simplify right side
    21,153,438.70x = 363,706,932,268,520.31
  5. Step 5: Solve for x
    x = 363,706,932,268,520.31/21,153,438.70
  6. Step 6: Final answer
    x = 17,193,749.79

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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.