Home / 31,669.64-47,507.79-12,946.70

Finding the Fourth Proportional to 31,669.64, 47,507.79 and 12,946.70

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Solution

The fourth proportional to 31,669.64, 47,507.79 and 12,946.70 is: 19,421.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,669.64 : 47,507.79 = 12,946.70 : x
  2. Step 2: Convert to fraction form
    31,669.64/47,507.79 = 12,946.70/x
  3. Step 3: Cross multiply
    31,669.64x = 47,507.79 × 12,946.70
  4. Step 4: Simplify right side
    31,669.64x = 615,069,035.28
  5. Step 5: Solve for x
    x = 615,069,035.28/31,669.64
  6. Step 6: Final answer
    x = 19,421.41

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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.