Home / 12,419.34-18,647.40-5,038.20

Finding the Fourth Proportional to 12,419.34, 18,647.40 and 5,038.20

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Solution

The fourth proportional to 12,419.34, 18,647.40 and 5,038.20 is: 7,564.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,419.34 : 18,647.40 = 5,038.20 : x
  2. Step 2: Convert to fraction form
    12,419.34/18,647.40 = 5,038.20/x
  3. Step 3: Cross multiply
    12,419.34x = 18,647.40 × 5,038.20
  4. Step 4: Simplify right side
    12,419.34x = 93,949,330.68
  5. Step 5: Solve for x
    x = 93,949,330.68/12,419.34
  6. Step 6: Final answer
    x = 7,564.76

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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.