Home / 20,671.10-31,006.65-10,813.40

Finding the Fourth Proportional to 20,671.10, 31,006.65 and 10,813.40

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Solution

The fourth proportional to 20,671.10, 31,006.65 and 10,813.40 is: 16,220.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,671.10 : 31,006.65 = 10,813.40 : x
  2. Step 2: Convert to fraction form
    20,671.10/31,006.65 = 10,813.40/x
  3. Step 3: Cross multiply
    20,671.10x = 31,006.65 × 10,813.40
  4. Step 4: Simplify right side
    20,671.10x = 335,287,309.11
  5. Step 5: Solve for x
    x = 335,287,309.11/20,671.10
  6. Step 6: Final answer
    x = 16,220.10

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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.