Home / 10,518.19-14,519.87-6,691.40

Finding the Fourth Proportional to 10,518.19, 14,519.87 and 6,691.40

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Solution

The fourth proportional to 10,518.19, 14,519.87 and 6,691.40 is: 9,237.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,518.19 : 14,519.87 = 6,691.40 : x
  2. Step 2: Convert to fraction form
    10,518.19/14,519.87 = 6,691.40/x
  3. Step 3: Cross multiply
    10,518.19x = 14,519.87 × 6,691.40
  4. Step 4: Simplify right side
    10,518.19x = 97,158,258.12
  5. Step 5: Solve for x
    x = 97,158,258.12/10,518.19
  6. Step 6: Final answer
    x = 9,237.17

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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.