Home / 31,579.61-47,369.61-21,688.90

Finding the Fourth Proportional to 31,579.61, 47,369.61 and 21,688.90

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Solution

The fourth proportional to 31,579.61, 47,369.61 and 21,688.90 is: 32,533.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,579.61 : 47,369.61 = 21,688.90 : x
  2. Step 2: Convert to fraction form
    31,579.61/47,369.61 = 21,688.90/x
  3. Step 3: Cross multiply
    31,579.61x = 47,369.61 × 21,688.90
  4. Step 4: Simplify right side
    31,579.61x = 1,027,394,615.90
  5. Step 5: Solve for x
    x = 1,027,394,615.90/31,579.61
  6. Step 6: Final answer
    x = 32,533.49

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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.