Home / 15,981.80-23,970.60-4,889.60

Finding the Fourth Proportional to 15,981.80, 23,970.60 and 4,889.60

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Solution

The fourth proportional to 15,981.80, 23,970.60 and 4,889.60 is: 7,333.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,981.80 : 23,970.60 = 4,889.60 : x
  2. Step 2: Convert to fraction form
    15,981.80/23,970.60 = 4,889.60/x
  3. Step 3: Cross multiply
    15,981.80x = 23,970.60 × 4,889.60
  4. Step 4: Simplify right side
    15,981.80x = 117,206,645.76
  5. Step 5: Solve for x
    x = 117,206,645.76/15,981.80
  6. Step 6: Final answer
    x = 7,333.76

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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.