Home / 11,235.78-15,506.10-6,457.28

Finding the Fourth Proportional to 11,235.78, 15,506.10 and 6,457.28

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Solution

The fourth proportional to 11,235.78, 15,506.10 and 6,457.28 is: 8,911.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,235.78 : 15,506.10 = 6,457.28 : x
  2. Step 2: Convert to fraction form
    11,235.78/15,506.10 = 6,457.28/x
  3. Step 3: Cross multiply
    11,235.78x = 15,506.10 × 6,457.28
  4. Step 4: Simplify right side
    11,235.78x = 100,127,151.88
  5. Step 5: Solve for x
    x = 100,127,151.88/11,235.78
  6. Step 6: Final answer
    x = 8,911.46

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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.