Home / 31,140.45-42,973.60-16,992.99

Finding the Fourth Proportional to 31,140.45, 42,973.60 and 16,992.99

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Solution

The fourth proportional to 31,140.45, 42,973.60 and 16,992.99 is: 23,450.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,140.45 : 42,973.60 = 16,992.99 : x
  2. Step 2: Convert to fraction form
    31,140.45/42,973.60 = 16,992.99/x
  3. Step 3: Cross multiply
    31,140.45x = 42,973.60 × 16,992.99
  4. Step 4: Simplify right side
    31,140.45x = 730,249,955.06
  5. Step 5: Solve for x
    x = 730,249,955.06/31,140.45
  6. Step 6: Final answer
    x = 23,450.21

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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.