Home / 39,157.40-54,037.27-21,252.41

Finding the Fourth Proportional to 39,157.40, 54,037.27 and 21,252.41

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Solution

The fourth proportional to 39,157.40, 54,037.27 and 21,252.41 is: 29,328.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,157.40 : 54,037.27 = 21,252.41 : x
  2. Step 2: Convert to fraction form
    39,157.40/54,037.27 = 21,252.41/x
  3. Step 3: Cross multiply
    39,157.40x = 54,037.27 × 21,252.41
  4. Step 4: Simplify right side
    39,157.40x = 1,148,421,840.87
  5. Step 5: Solve for x
    x = 1,148,421,840.87/39,157.40
  6. Step 6: Final answer
    x = 29,328.35

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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.