Home / 31,125.09-42,952.76-16,978.23

Finding the Fourth Proportional to 31,125.09, 42,952.76 and 16,978.23

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Solution

The fourth proportional to 31,125.09, 42,952.76 and 16,978.23 is: 23,430.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,125.09 : 42,952.76 = 16,978.23 : x
  2. Step 2: Convert to fraction form
    31,125.09/42,952.76 = 16,978.23/x
  3. Step 3: Cross multiply
    31,125.09x = 42,952.76 × 16,978.23
  4. Step 4: Simplify right side
    31,125.09x = 729,261,753.52
  5. Step 5: Solve for x
    x = 729,261,753.52/31,125.09
  6. Step 6: Final answer
    x = 23,430.03

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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.