Home / 10,905.95-15,048.69-6,189.32

Finding the Fourth Proportional to 10,905.95, 15,048.69 and 6,189.32

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Solution

The fourth proportional to 10,905.95, 15,048.69 and 6,189.32 is: 8,540.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,905.95 : 15,048.69 = 6,189.32 : x
  2. Step 2: Convert to fraction form
    10,905.95/15,048.69 = 6,189.32/x
  3. Step 3: Cross multiply
    10,905.95x = 15,048.69 × 6,189.32
  4. Step 4: Simplify right side
    10,905.95x = 93,141,082.75
  5. Step 5: Solve for x
    x = 93,141,082.75/10,905.95
  6. Step 6: Final answer
    x = 8,540.40

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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.