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Finding the Fourth Proportional to 15,009.68, 20,710.40 and 8,293.98

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Solution

The fourth proportional to 15,009.68, 20,710.40 and 8,293.98 is: 11,444.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,009.68 : 20,710.40 = 8,293.98 : x
  2. Step 2: Convert to fraction form
    15,009.68/20,710.40 = 8,293.98/x
  3. Step 3: Cross multiply
    15,009.68x = 20,710.40 × 8,293.98
  4. Step 4: Simplify right side
    15,009.68x = 171,771,643.39
  5. Step 5: Solve for x
    x = 171,771,643.39/15,009.68
  6. Step 6: Final answer
    x = 11,444.06

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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.