Home / 31,985.20-47,977.80-16,433.20

Finding the Fourth Proportional to 31,985.20, 47,977.80 and 16,433.20

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Solution

The fourth proportional to 31,985.20, 47,977.80 and 16,433.20 is: 24,649.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,985.20 : 47,977.80 = 16,433.20 : x
  2. Step 2: Convert to fraction form
    31,985.20/47,977.80 = 16,433.20/x
  3. Step 3: Cross multiply
    31,985.20x = 47,977.80 × 16,433.20
  4. Step 4: Simplify right side
    31,985.20x = 788,428,782.96
  5. Step 5: Solve for x
    x = 788,428,782.96/31,985.20
  6. Step 6: Final answer
    x = 24,649.80

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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.