Home / 15,913.89-21,960.45-8,840.70

Finding the Fourth Proportional to 15,913.89, 21,960.45 and 8,840.70

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Solution

The fourth proportional to 15,913.89, 21,960.45 and 8,840.70 is: 12,199.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,913.89 : 21,960.45 = 8,840.70 : x
  2. Step 2: Convert to fraction form
    15,913.89/21,960.45 = 8,840.70/x
  3. Step 3: Cross multiply
    15,913.89x = 21,960.45 × 8,840.70
  4. Step 4: Simplify right side
    15,913.89x = 194,145,750.32
  5. Step 5: Solve for x
    x = 194,145,750.32/15,913.89
  6. Step 6: Final answer
    x = 12,199.77

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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.