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Finding the Fourth Proportional to 20,655.47, 30,973.59 and 10,126.01

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Solution

The fourth proportional to 20,655.47, 30,973.59 and 10,126.01 is: 15,184.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,655.47 : 30,973.59 = 10,126.01 : x
  2. Step 2: Convert to fraction form
    20,655.47/30,973.59 = 10,126.01/x
  3. Step 3: Cross multiply
    20,655.47x = 30,973.59 × 10,126.01
  4. Step 4: Simplify right side
    20,655.47x = 313,638,727.21
  5. Step 5: Solve for x
    x = 313,638,727.21/20,655.47
  6. Step 6: Final answer
    x = 15,184.30

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.