Home / 20,911,007.80-31,368,066.90-7,446,086.20

Finding the Fourth Proportional to 20,911,007.80, 31,368,066.90 and 7,446,086.20

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Solution

The fourth proportional to 20,911,007.80, 31,368,066.90 and 7,446,086.20 is: 11,169,683.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,911,007.80 : 31,368,066.90 = 7,446,086.20 : x
  2. Step 2: Convert to fraction form
    20,911,007.80/31,368,066.90 = 7,446,086.20/x
  3. Step 3: Cross multiply
    20,911,007.80x = 31,368,066.90 × 7,446,086.20
  4. Step 4: Simplify right side
    20,911,007.80x = 233,569,330,064,766.78
  5. Step 5: Solve for x
    x = 233,569,330,064,766.78/20,911,007.80
  6. Step 6: Final answer
    x = 11,169,683.08

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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.