Home / 10,207.79-15,320.91-5,280.89

Finding the Fourth Proportional to 10,207.79, 15,320.91 and 5,280.89

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Solution

The fourth proportional to 10,207.79, 15,320.91 and 5,280.89 is: 7,926.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,207.79 : 15,320.91 = 5,280.89 : x
  2. Step 2: Convert to fraction form
    10,207.79/15,320.91 = 5,280.89/x
  3. Step 3: Cross multiply
    10,207.79x = 15,320.91 × 5,280.89
  4. Step 4: Simplify right side
    10,207.79x = 80,907,963.81
  5. Step 5: Solve for x
    x = 80,907,963.81/10,207.79
  6. Step 6: Final answer
    x = 7,926.10

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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.