Home / 21,280.62-31,925.04-7,240.08

Finding the Fourth Proportional to 21,280.62, 31,925.04 and 7,240.08

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Solution

The fourth proportional to 21,280.62, 31,925.04 and 7,240.08 is: 10,861.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,280.62 : 31,925.04 = 7,240.08 : x
  2. Step 2: Convert to fraction form
    21,280.62/31,925.04 = 7,240.08/x
  3. Step 3: Cross multiply
    21,280.62x = 31,925.04 × 7,240.08
  4. Step 4: Simplify right side
    21,280.62x = 231,139,936.17
  5. Step 5: Solve for x
    x = 231,139,936.17/21,280.62
  6. Step 6: Final answer
    x = 10,861.52

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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.