Home / 31,111.40-46,667.10-18,669.80

Finding the Fourth Proportional to 31,111.40, 46,667.10 and 18,669.80

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Solution

The fourth proportional to 31,111.40, 46,667.10 and 18,669.80 is: 28,004.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,111.40 : 46,667.10 = 18,669.80 : x
  2. Step 2: Convert to fraction form
    31,111.40/46,667.10 = 18,669.80/x
  3. Step 3: Cross multiply
    31,111.40x = 46,667.10 × 18,669.80
  4. Step 4: Simplify right side
    31,111.40x = 871,265,423.58
  5. Step 5: Solve for x
    x = 871,265,423.58/31,111.40
  6. Step 6: Final answer
    x = 28,004.70

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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.