Home / 37,639.49-51,943.21-20,642.72

Finding the Fourth Proportional to 37,639.49, 51,943.21 and 20,642.72

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Solution

The fourth proportional to 37,639.49, 51,943.21 and 20,642.72 is: 28,487.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    37,639.49 : 51,943.21 = 20,642.72 : x
  2. Step 2: Convert to fraction form
    37,639.49/51,943.21 = 20,642.72/x
  3. Step 3: Cross multiply
    37,639.49x = 51,943.21 × 20,642.72
  4. Step 4: Simplify right side
    37,639.49x = 1,072,248,828.61
  5. Step 5: Solve for x
    x = 1,072,248,828.61/37,639.49
  6. Step 6: Final answer
    x = 28,487.34

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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.