Home / 31,114.48-42,938.40-16,967.92

Finding the Fourth Proportional to 31,114.48, 42,938.40 and 16,967.92

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Solution

The fourth proportional to 31,114.48, 42,938.40 and 16,967.92 is: 23,415.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,114.48 : 42,938.40 = 16,967.92 : x
  2. Step 2: Convert to fraction form
    31,114.48/42,938.40 = 16,967.92/x
  3. Step 3: Cross multiply
    31,114.48x = 42,938.40 × 16,967.92
  4. Step 4: Simplify right side
    31,114.48x = 728,575,336.13
  5. Step 5: Solve for x
    x = 728,575,336.13/31,114.48
  6. Step 6: Final answer
    x = 23,415.96

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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.