Home / 11,100.95-15,312.05-6,621.71

Finding the Fourth Proportional to 11,100.95, 15,312.05 and 6,621.71

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Solution

The fourth proportional to 11,100.95, 15,312.05 and 6,621.71 is: 9,133.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,100.95 : 15,312.05 = 6,621.71 : x
  2. Step 2: Convert to fraction form
    11,100.95/15,312.05 = 6,621.71/x
  3. Step 3: Cross multiply
    11,100.95x = 15,312.05 × 6,621.71
  4. Step 4: Simplify right side
    11,100.95x = 101,391,907.02
  5. Step 5: Solve for x
    x = 101,391,907.02/11,100.95
  6. Step 6: Final answer
    x = 9,133.62

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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.