Home / 10,345.79-15,518.72-5,416.88

Finding the Fourth Proportional to 10,345.79, 15,518.72 and 5,416.88

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Solution

The fourth proportional to 10,345.79, 15,518.72 and 5,416.88 is: 8,125.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,345.79 : 15,518.72 = 5,416.88 : x
  2. Step 2: Convert to fraction form
    10,345.79/15,518.72 = 5,416.88/x
  3. Step 3: Cross multiply
    10,345.79x = 15,518.72 × 5,416.88
  4. Step 4: Simplify right side
    10,345.79x = 84,062,979.94
  5. Step 5: Solve for x
    x = 84,062,979.94/10,345.79
  6. Step 6: Final answer
    x = 8,125.33

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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.