Home / 11,509.10-15,878.40-7,532.48

Finding the Fourth Proportional to 11,509.10, 15,878.40 and 7,532.48

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Solution

The fourth proportional to 11,509.10, 15,878.40 and 7,532.48 is: 10,392.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,509.10 : 15,878.40 = 7,532.48 : x
  2. Step 2: Convert to fraction form
    11,509.10/15,878.40 = 7,532.48/x
  3. Step 3: Cross multiply
    11,509.10x = 15,878.40 × 7,532.48
  4. Step 4: Simplify right side
    11,509.10x = 119,603,730.43
  5. Step 5: Solve for x
    x = 119,603,730.43/11,509.10
  6. Step 6: Final answer
    x = 10,392.10

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.