Home / 30,521.64-42,123.60-18,586.71

Finding the Fourth Proportional to 30,521.64, 42,123.60 and 18,586.71

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Solution

The fourth proportional to 30,521.64, 42,123.60 and 18,586.71 is: 25,651.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,521.64 : 42,123.60 = 18,586.71 : x
  2. Step 2: Convert to fraction form
    30,521.64/42,123.60 = 18,586.71/x
  3. Step 3: Cross multiply
    30,521.64x = 42,123.60 × 18,586.71
  4. Step 4: Simplify right side
    30,521.64x = 782,939,137.36
  5. Step 5: Solve for x
    x = 782,939,137.36/30,521.64
  6. Step 6: Final answer
    x = 25,651.94

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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.