Home / 31,618.38-47,427.39-12,898.32

Finding the Fourth Proportional to 31,618.38, 47,427.39 and 12,898.32

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Solution

The fourth proportional to 31,618.38, 47,427.39 and 12,898.32 is: 19,347.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,618.38 : 47,427.39 = 12,898.32 : x
  2. Step 2: Convert to fraction form
    31,618.38/47,427.39 = 12,898.32/x
  3. Step 3: Cross multiply
    31,618.38x = 47,427.39 × 12,898.32
  4. Step 4: Simplify right side
    31,618.38x = 611,733,652.98
  5. Step 5: Solve for x
    x = 611,733,652.98/31,618.38
  6. Step 6: Final answer
    x = 19,347.41

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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.