Home / 37,631.30-51,931.79-20,637.09

Finding the Fourth Proportional to 37,631.30, 51,931.79 and 20,637.09

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Solution

The fourth proportional to 37,631.30, 51,931.79 and 20,637.09 is: 28,479.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    37,631.30 : 51,931.79 = 20,637.09 : x
  2. Step 2: Convert to fraction form
    37,631.30/51,931.79 = 20,637.09/x
  3. Step 3: Cross multiply
    37,631.30x = 51,931.79 × 20,637.09
  4. Step 4: Simplify right side
    37,631.30x = 1,071,720,920.91
  5. Step 5: Solve for x
    x = 1,071,720,920.91/37,631.30
  6. Step 6: Final answer
    x = 28,479.51

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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.