Home / 28,193.04-38,903.56-15,615.44

Finding the Fourth Proportional to 28,193.04, 38,903.56 and 15,615.44

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Solution

The fourth proportional to 28,193.04, 38,903.56 and 15,615.44 is: 21,547.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,193.04 : 38,903.56 = 15,615.44 : x
  2. Step 2: Convert to fraction form
    28,193.04/38,903.56 = 15,615.44/x
  3. Step 3: Cross multiply
    28,193.04x = 38,903.56 × 15,615.44
  4. Step 4: Simplify right side
    28,193.04x = 607,496,206.97
  5. Step 5: Solve for x
    x = 607,496,206.97/28,193.04
  6. Step 6: Final answer
    x = 21,547.74

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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.