Home / 11,585.40-15,988.86-9,693.65

Finding the Fourth Proportional to 11,585.40, 15,988.86 and 9,693.65

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Solution

The fourth proportional to 11,585.40, 15,988.86 and 9,693.65 is: 13,378.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,585.40 : 15,988.86 = 9,693.65 : x
  2. Step 2: Convert to fraction form
    11,585.40/15,988.86 = 9,693.65/x
  3. Step 3: Cross multiply
    11,585.40x = 15,988.86 × 9,693.65
  4. Step 4: Simplify right side
    11,585.40x = 154,990,332.79
  5. Step 5: Solve for x
    x = 154,990,332.79/11,585.40
  6. Step 6: Final answer
    x = 13,378.07

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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.