Home / 40,939.40-61,409.10-14,646.20

Finding the Fourth Proportional to 40,939.40, 61,409.10 and 14,646.20

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Solution

The fourth proportional to 40,939.40, 61,409.10 and 14,646.20 is: 21,969.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,939.40 : 61,409.10 = 14,646.20 : x
  2. Step 2: Convert to fraction form
    40,939.40/61,409.10 = 14,646.20/x
  3. Step 3: Cross multiply
    40,939.40x = 61,409.10 × 14,646.20
  4. Step 4: Simplify right side
    40,939.40x = 899,409,960.42
  5. Step 5: Solve for x
    x = 899,409,960.42/40,939.40
  6. Step 6: Final answer
    x = 21,969.30

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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.