Home / 12,942.34-19,421.03-5,445.35

Finding the Fourth Proportional to 12,942.34, 19,421.03 and 5,445.35

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Solution

The fourth proportional to 12,942.34, 19,421.03 and 5,445.35 is: 8,171.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,942.34 : 19,421.03 = 5,445.35 : x
  2. Step 2: Convert to fraction form
    12,942.34/19,421.03 = 5,445.35/x
  3. Step 3: Cross multiply
    12,942.34x = 19,421.03 × 5,445.35
  4. Step 4: Simplify right side
    12,942.34x = 105,754,305.71
  5. Step 5: Solve for x
    x = 105,754,305.71/12,942.34
  6. Step 6: Final answer
    x = 8,171.19

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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.