Home / 10,172.52-15,271.74-8,643.24

Finding the Fourth Proportional to 10,172.52, 15,271.74 and 8,643.24

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Solution

The fourth proportional to 10,172.52, 15,271.74 and 8,643.24 is: 12,975.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,172.52 : 15,271.74 = 8,643.24 : x
  2. Step 2: Convert to fraction form
    10,172.52/15,271.74 = 8,643.24/x
  3. Step 3: Cross multiply
    10,172.52x = 15,271.74 × 8,643.24
  4. Step 4: Simplify right side
    10,172.52x = 131,997,314.04
  5. Step 5: Solve for x
    x = 131,997,314.04/10,172.52
  6. Step 6: Final answer
    x = 12,975.87

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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.