Home / 20,817.50-31,223.96-5,235.13

Finding the Fourth Proportional to 20,817.50, 31,223.96 and 5,235.13

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Solution

The fourth proportional to 20,817.50, 31,223.96 and 5,235.13 is: 7,852.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,817.50 : 31,223.96 = 5,235.13 : x
  2. Step 2: Convert to fraction form
    20,817.50/31,223.96 = 5,235.13/x
  3. Step 3: Cross multiply
    20,817.50x = 31,223.96 × 5,235.13
  4. Step 4: Simplify right side
    20,817.50x = 163,461,307.42
  5. Step 5: Solve for x
    x = 163,461,307.42/20,817.50
  6. Step 6: Final answer
    x = 7,852.11

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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.