Home / 10,386.24-15,579.12-3,460.80

Finding the Fourth Proportional to 10,386.24, 15,579.12 and 3,460.80

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Solution

The fourth proportional to 10,386.24, 15,579.12 and 3,460.80 is: 5,191.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,386.24 : 15,579.12 = 3,460.80 : x
  2. Step 2: Convert to fraction form
    10,386.24/15,579.12 = 3,460.80/x
  3. Step 3: Cross multiply
    10,386.24x = 15,579.12 × 3,460.80
  4. Step 4: Simplify right side
    10,386.24x = 53,916,218.50
  5. Step 5: Solve for x
    x = 53,916,218.50/10,386.24
  6. Step 6: Final answer
    x = 5,191.12

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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.