Home / 39,326,931.72-54,274,396.20-21,689,283.72

Finding the Fourth Proportional to 39,326,931.72, 54,274,396.20 and 21,689,283.72

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Solution

The fourth proportional to 39,326,931.72, 54,274,396.20 and 21,689,283.72 is: 29,932,993.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,326,931.72 : 54,274,396.20 = 21,689,283.72 : x
  2. Step 2: Convert to fraction form
    39,326,931.72/54,274,396.20 = 21,689,283.72/x
  3. Step 3: Cross multiply
    39,326,931.72x = 54,274,396.20 × 21,689,283.72
  4. Step 4: Simplify right side
    39,326,931.72x = 1,177,172,777,913,489.75
  5. Step 5: Solve for x
    x = 1,177,172,777,913,489.75/39,326,931.72
  6. Step 6: Final answer
    x = 29,932,993.15

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1.5x scale

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.