Home / 74,384.31-111,576.47-18,980.31

Finding the Fourth Proportional to 74,384.31, 111,576.47 and 18,980.31

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Solution

The fourth proportional to 74,384.31, 111,576.47 and 18,980.31 is: 28,470.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,384.31 : 111,576.47 = 18,980.31 : x
  2. Step 2: Convert to fraction form
    74,384.31/111,576.47 = 18,980.31/x
  3. Step 3: Cross multiply
    74,384.31x = 111,576.47 × 18,980.31
  4. Step 4: Simplify right side
    74,384.31x = 2,117,755,989.31
  5. Step 5: Solve for x
    x = 2,117,755,989.31/74,384.31
  6. Step 6: Final answer
    x = 28,470.47

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1.5x scale

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.