Home / 15,506.55-21,399.30-8,433.18

Finding the Fourth Proportional to 15,506.55, 21,399.30 and 8,433.18

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Solution

The fourth proportional to 15,506.55, 21,399.30 and 8,433.18 is: 11,637.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,506.55 : 21,399.30 = 8,433.18 : x
  2. Step 2: Convert to fraction form
    15,506.55/21,399.30 = 8,433.18/x
  3. Step 3: Cross multiply
    15,506.55x = 21,399.30 × 8,433.18
  4. Step 4: Simplify right side
    15,506.55x = 180,464,148.77
  5. Step 5: Solve for x
    x = 180,464,148.77/15,506.55
  6. Step 6: Final answer
    x = 11,637.93

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.