Home / 9,721.80-14,582.70-9,145.80

Finding the Fourth Proportional to 9,721.80, 14,582.70 and 9,145.80

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Solution

The fourth proportional to 9,721.80, 14,582.70 and 9,145.80 is: 13,718.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,721.80 : 14,582.70 = 9,145.80 : x
  2. Step 2: Convert to fraction form
    9,721.80/14,582.70 = 9,145.80/x
  3. Step 3: Cross multiply
    9,721.80x = 14,582.70 × 9,145.80
  4. Step 4: Simplify right side
    9,721.80x = 133,370,457.66
  5. Step 5: Solve for x
    x = 133,370,457.66/9,721.80
  6. Step 6: Final answer
    x = 13,718.70

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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.