Home / 11,990.87-16,547.42-6,686.02

Finding the Fourth Proportional to 11,990.87, 16,547.42 and 6,686.02

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Solution

The fourth proportional to 11,990.87, 16,547.42 and 6,686.02 is: 9,226.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,990.87 : 16,547.42 = 6,686.02 : x
  2. Step 2: Convert to fraction form
    11,990.87/16,547.42 = 6,686.02/x
  3. Step 3: Cross multiply
    11,990.87x = 16,547.42 × 6,686.02
  4. Step 4: Simplify right side
    11,990.87x = 110,636,347.64
  5. Step 5: Solve for x
    x = 110,636,347.64/11,990.87
  6. Step 6: Final answer
    x = 9,226.72

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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.