Home / 9,718.30-13,397.56-8,220.16

Finding the Fourth Proportional to 9,718.30, 13,397.56 and 8,220.16

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Solution

The fourth proportional to 9,718.30, 13,397.56 and 8,220.16 is: 11,332.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,718.30 : 13,397.56 = 8,220.16 : x
  2. Step 2: Convert to fraction form
    9,718.30/13,397.56 = 8,220.16/x
  3. Step 3: Cross multiply
    9,718.30x = 13,397.56 × 8,220.16
  4. Step 4: Simplify right side
    9,718.30x = 110,130,086.81
  5. Step 5: Solve for x
    x = 110,130,086.81/9,718.30
  6. Step 6: Final answer
    x = 11,332.24

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Half scale
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Double scale
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Similar ratio
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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.