Home / 20,776,430.80-31,129,216.80-17,729,502.40

Finding the Fourth Proportional to 20,776,430.80, 31,129,216.80 and 17,729,502.40

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Solution

The fourth proportional to 20,776,430.80, 31,129,216.80 and 17,729,502.40 is: 26,564,020.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,776,430.80 : 31,129,216.80 = 17,729,502.40 : x
  2. Step 2: Convert to fraction form
    20,776,430.80/31,129,216.80 = 17,729,502.40/x
  3. Step 3: Cross multiply
    20,776,430.80x = 31,129,216.80 × 17,729,502.40
  4. Step 4: Simplify right side
    20,776,430.80x = 551,905,523,965,720.31
  5. Step 5: Solve for x
    x = 551,905,523,965,720.31/20,776,430.80
  6. Step 6: Final answer
    x = 26,564,020.03

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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.