Home / 31,108.40-46,662.60-18,666.80

Finding the Fourth Proportional to 31,108.40, 46,662.60 and 18,666.80

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Solution

The fourth proportional to 31,108.40, 46,662.60 and 18,666.80 is: 28,000.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,108.40 : 46,662.60 = 18,666.80 : x
  2. Step 2: Convert to fraction form
    31,108.40/46,662.60 = 18,666.80/x
  3. Step 3: Cross multiply
    31,108.40x = 46,662.60 × 18,666.80
  4. Step 4: Simplify right side
    31,108.40x = 871,041,421.68
  5. Step 5: Solve for x
    x = 871,041,421.68/31,108.40
  6. Step 6: Final answer
    x = 28,000.20

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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.