Home / 13,664.99-20,475.90-10,317.40

Finding the Fourth Proportional to 13,664.99, 20,475.90 and 10,317.40

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Solution

The fourth proportional to 13,664.99, 20,475.90 and 10,317.40 is: 15,459.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,664.99 : 20,475.90 = 10,317.40 : x
  2. Step 2: Convert to fraction form
    13,664.99/20,475.90 = 10,317.40/x
  3. Step 3: Cross multiply
    13,664.99x = 20,475.90 × 10,317.40
  4. Step 4: Simplify right side
    13,664.99x = 211,257,999.47
  5. Step 5: Solve for x
    x = 211,257,999.47/13,664.99
  6. Step 6: Final answer
    x = 15,459.80

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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.