Home / 12,817.17-19,228.32-5,421.60

Finding the Fourth Proportional to 12,817.17, 19,228.32 and 5,421.60

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Solution

The fourth proportional to 12,817.17, 19,228.32 and 5,421.60 is: 8,133.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,817.17 : 19,228.32 = 5,421.60 : x
  2. Step 2: Convert to fraction form
    12,817.17/19,228.32 = 5,421.60/x
  3. Step 3: Cross multiply
    12,817.17x = 19,228.32 × 5,421.60
  4. Step 4: Simplify right side
    12,817.17x = 104,248,259.71
  5. Step 5: Solve for x
    x = 104,248,259.71/12,817.17
  6. Step 6: Final answer
    x = 8,133.48

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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.