Home / 11,116.09-15,325.19-7,130.28

Finding the Fourth Proportional to 11,116.09, 15,325.19 and 7,130.28

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Solution

The fourth proportional to 11,116.09, 15,325.19 and 7,130.28 is: 9,830.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,116.09 : 15,325.19 = 7,130.28 : x
  2. Step 2: Convert to fraction form
    11,116.09/15,325.19 = 7,130.28/x
  3. Step 3: Cross multiply
    11,116.09x = 15,325.19 × 7,130.28
  4. Step 4: Simplify right side
    11,116.09x = 109,272,895.75
  5. Step 5: Solve for x
    x = 109,272,895.75/11,116.09
  6. Step 6: Final answer
    x = 9,830.16

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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.