Home / 21,951.66-30,285.63-15,235.50

Finding the Fourth Proportional to 21,951.66, 30,285.63 and 15,235.50

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Solution

The fourth proportional to 21,951.66, 30,285.63 and 15,235.50 is: 21,019.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,951.66 : 30,285.63 = 15,235.50 : x
  2. Step 2: Convert to fraction form
    21,951.66/30,285.63 = 15,235.50/x
  3. Step 3: Cross multiply
    21,951.66x = 30,285.63 × 15,235.50
  4. Step 4: Simplify right side
    21,951.66x = 461,416,715.87
  5. Step 5: Solve for x
    x = 461,416,715.87/21,951.66
  6. Step 6: Final answer
    x = 21,019.67

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.