Home / 20,281.75-30,427.53-6,430.75

Finding the Fourth Proportional to 20,281.75, 30,427.53 and 6,430.75

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Solution

The fourth proportional to 20,281.75, 30,427.53 and 6,430.75 is: 9,647.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,281.75 : 30,427.53 = 6,430.75 : x
  2. Step 2: Convert to fraction form
    20,281.75/30,427.53 = 6,430.75/x
  3. Step 3: Cross multiply
    20,281.75x = 30,427.53 × 6,430.75
  4. Step 4: Simplify right side
    20,281.75x = 195,671,838.55
  5. Step 5: Solve for x
    x = 195,671,838.55/20,281.75
  6. Step 6: Final answer
    x = 9,647.68

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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.