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Finding the Fourth Proportional to 10,599.95, 15,953.09 and 7,981.02

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Solution

The fourth proportional to 10,599.95, 15,953.09 and 7,981.02 is: 12,011.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,599.95 : 15,953.09 = 7,981.02 : x
  2. Step 2: Convert to fraction form
    10,599.95/15,953.09 = 7,981.02/x
  3. Step 3: Cross multiply
    10,599.95x = 15,953.09 × 7,981.02
  4. Step 4: Simplify right side
    10,599.95x = 127,321,890.45
  5. Step 5: Solve for x
    x = 127,321,890.45/10,599.95
  6. Step 6: Final answer
    x = 12,011.56

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.