Home / 13,423.34-20,136.38-6,402.16

Finding the Fourth Proportional to 13,423.34, 20,136.38 and 6,402.16

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Solution

The fourth proportional to 13,423.34, 20,136.38 and 6,402.16 is: 9,603.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,423.34 : 20,136.38 = 6,402.16 : x
  2. Step 2: Convert to fraction form
    13,423.34/20,136.38 = 6,402.16/x
  3. Step 3: Cross multiply
    13,423.34x = 20,136.38 × 6,402.16
  4. Step 4: Simplify right side
    13,423.34x = 128,916,326.58
  5. Step 5: Solve for x
    x = 128,916,326.58/13,423.34
  6. Step 6: Final answer
    x = 9,603.89

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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.