Home / 25,898,666.40-38,847,999.60-21,111,760.80

Finding the Fourth Proportional to 25,898,666.40, 38,847,999.60 and 21,111,760.80

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Solution

The fourth proportional to 25,898,666.40, 38,847,999.60 and 21,111,760.80 is: 31,667,641.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,898,666.40 : 38,847,999.60 = 21,111,760.80 : x
  2. Step 2: Convert to fraction form
    25,898,666.40/38,847,999.60 = 21,111,760.80/x
  3. Step 3: Cross multiply
    25,898,666.40x = 38,847,999.60 × 21,111,760.80
  4. Step 4: Simplify right side
    25,898,666.40x = 820,149,675,113,695.75
  5. Step 5: Solve for x
    x = 820,149,675,113,695.75/25,898,666.40
  6. Step 6: Final answer
    x = 31,667,641.20

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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.