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Finding the Fourth Proportional to 15,071.13, 20,799.23 and 8,357.40

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Solution

The fourth proportional to 15,071.13, 20,799.23 and 8,357.40 is: 11,533.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,071.13 : 20,799.23 = 8,357.40 : x
  2. Step 2: Convert to fraction form
    15,071.13/20,799.23 = 8,357.40/x
  3. Step 3: Cross multiply
    15,071.13x = 20,799.23 × 8,357.40
  4. Step 4: Simplify right side
    15,071.13x = 173,827,443.02
  5. Step 5: Solve for x
    x = 173,827,443.02/15,071.13
  6. Step 6: Final answer
    x = 11,533.80

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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.