Home / 20,683.10-31,033.40-11,312.18

Finding the Fourth Proportional to 20,683.10, 31,033.40 and 11,312.18

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Solution

The fourth proportional to 20,683.10, 31,033.40 and 11,312.18 is: 16,973.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,683.10 : 31,033.40 = 11,312.18 : x
  2. Step 2: Convert to fraction form
    20,683.10/31,033.40 = 11,312.18/x
  3. Step 3: Cross multiply
    20,683.10x = 31,033.40 × 11,312.18
  4. Step 4: Simplify right side
    20,683.10x = 351,055,195.08
  5. Step 5: Solve for x
    x = 351,055,195.08/20,683.10
  6. Step 6: Final answer
    x = 16,973.05

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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.