Home / 10,548.20-15,803.10-6,439.40

Finding the Fourth Proportional to 10,548.20, 15,803.10 and 6,439.40

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Solution

The fourth proportional to 10,548.20, 15,803.10 and 6,439.40 is: 9,647.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,548.20 : 15,803.10 = 6,439.40 : x
  2. Step 2: Convert to fraction form
    10,548.20/15,803.10 = 6,439.40/x
  3. Step 3: Cross multiply
    10,548.20x = 15,803.10 × 6,439.40
  4. Step 4: Simplify right side
    10,548.20x = 101,762,482.14
  5. Step 5: Solve for x
    x = 101,762,482.14/10,548.20
  6. Step 6: Final answer
    x = 9,647.38

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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.