Home / 13,538.13-20,303.10-5,217.51

Finding the Fourth Proportional to 13,538.13, 20,303.10 and 5,217.51

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Solution

The fourth proportional to 13,538.13, 20,303.10 and 5,217.51 is: 7,824.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,538.13 : 20,303.10 = 5,217.51 : x
  2. Step 2: Convert to fraction form
    13,538.13/20,303.10 = 5,217.51/x
  3. Step 3: Cross multiply
    13,538.13x = 20,303.10 × 5,217.51
  4. Step 4: Simplify right side
    13,538.13x = 105,931,627.28
  5. Step 5: Solve for x
    x = 105,931,627.28/13,538.13
  6. Step 6: Final answer
    x = 7,824.69

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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.