Home / 13,139.21-19,697.10-4,817.29

Finding the Fourth Proportional to 13,139.21, 19,697.10 and 4,817.29

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Solution

The fourth proportional to 13,139.21, 19,697.10 and 4,817.29 is: 7,221.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,139.21 : 19,697.10 = 4,817.29 : x
  2. Step 2: Convert to fraction form
    13,139.21/19,697.10 = 4,817.29/x
  3. Step 3: Cross multiply
    13,139.21x = 19,697.10 × 4,817.29
  4. Step 4: Simplify right side
    13,139.21x = 94,886,632.81
  5. Step 5: Solve for x
    x = 94,886,632.81/13,139.21
  6. Step 6: Final answer
    x = 7,221.64

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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.