Home / 12,890.23-19,317.10-5,487.23

Finding the Fourth Proportional to 12,890.23, 19,317.10 and 5,487.23

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Solution

The fourth proportional to 12,890.23, 19,317.10 and 5,487.23 is: 8,223.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,890.23 : 19,317.10 = 5,487.23 : x
  2. Step 2: Convert to fraction form
    12,890.23/19,317.10 = 5,487.23/x
  3. Step 3: Cross multiply
    12,890.23x = 19,317.10 × 5,487.23
  4. Step 4: Simplify right side
    12,890.23x = 105,997,370.63
  5. Step 5: Solve for x
    x = 105,997,370.63/12,890.23
  6. Step 6: Final answer
    x = 8,223.08

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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.