Home / 10,988.07-15,155.21-7,958.76

Finding the Fourth Proportional to 10,988.07, 15,155.21 and 7,958.76

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Solution

The fourth proportional to 10,988.07, 15,155.21 and 7,958.76 is: 10,977.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,988.07 : 15,155.21 = 7,958.76 : x
  2. Step 2: Convert to fraction form
    10,988.07/15,155.21 = 7,958.76/x
  3. Step 3: Cross multiply
    10,988.07x = 15,155.21 × 7,958.76
  4. Step 4: Simplify right side
    10,988.07x = 120,616,639.35
  5. Step 5: Solve for x
    x = 120,616,639.35/10,988.07
  6. Step 6: Final answer
    x = 10,977.05

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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.