Home / 15,451.65-21,315.06-9,403.74

Finding the Fourth Proportional to 15,451.65, 21,315.06 and 9,403.74

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Solution

The fourth proportional to 15,451.65, 21,315.06 and 9,403.74 is: 12,972.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,451.65 : 21,315.06 = 9,403.74 : x
  2. Step 2: Convert to fraction form
    15,451.65/21,315.06 = 9,403.74/x
  3. Step 3: Cross multiply
    15,451.65x = 21,315.06 × 9,403.74
  4. Step 4: Simplify right side
    15,451.65x = 200,441,282.32
  5. Step 5: Solve for x
    x = 200,441,282.32/15,451.65
  6. Step 6: Final answer
    x = 12,972.16

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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.