Home / 39,638.12-59,494.14-20,931.98

Finding the Fourth Proportional to 39,638.12, 59,494.14 and 20,931.98

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Solution

The fourth proportional to 39,638.12, 59,494.14 and 20,931.98 is: 31,417.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,638.12 : 59,494.14 = 20,931.98 : x
  2. Step 2: Convert to fraction form
    39,638.12/59,494.14 = 20,931.98/x
  3. Step 3: Cross multiply
    39,638.12x = 59,494.14 × 20,931.98
  4. Step 4: Simplify right side
    39,638.12x = 1,245,330,148.60
  5. Step 5: Solve for x
    x = 1,245,330,148.60/39,638.12
  6. Step 6: Final answer
    x = 31,417.49

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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.