Home / 15,131.34-22,653.18-12,638.16

Finding the Fourth Proportional to 15,131.34, 22,653.18 and 12,638.16

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Solution

The fourth proportional to 15,131.34, 22,653.18 and 12,638.16 is: 18,920.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,131.34 : 22,653.18 = 12,638.16 : x
  2. Step 2: Convert to fraction form
    15,131.34/22,653.18 = 12,638.16/x
  3. Step 3: Cross multiply
    15,131.34x = 22,653.18 × 12,638.16
  4. Step 4: Simplify right side
    15,131.34x = 286,294,513.35
  5. Step 5: Solve for x
    x = 286,294,513.35/15,131.34
  6. Step 6: Final answer
    x = 18,920.63

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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.