Home / 15,017.48-20,724.26-8,302.76

Finding the Fourth Proportional to 15,017.48, 20,724.26 and 8,302.76

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Solution

The fourth proportional to 15,017.48, 20,724.26 and 8,302.76 is: 11,457.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,017.48 : 20,724.26 = 8,302.76 : x
  2. Step 2: Convert to fraction form
    15,017.48/20,724.26 = 8,302.76/x
  3. Step 3: Cross multiply
    15,017.48x = 20,724.26 × 8,302.76
  4. Step 4: Simplify right side
    15,017.48x = 172,068,556.96
  5. Step 5: Solve for x
    x = 172,068,556.96/15,017.48
  6. Step 6: Final answer
    x = 11,457.88

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Half scale
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Double scale
Find fourth proportional to 15,018.48, 20,725.64 and 8,303.76
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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.