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Finding the Fourth Proportional to 13,124.30, 18,412.90 and 13,124.30

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Solution

The fourth proportional to 13,124.30, 18,412.90 and 13,124.30 is: 18,412.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,124.30 : 18,412.90 = 13,124.30 : x
  2. Step 2: Convert to fraction form
    13,124.30/18,412.90 = 13,124.30/x
  3. Step 3: Cross multiply
    13,124.30x = 18,412.90 × 13,124.30
  4. Step 4: Simplify right side
    13,124.30x = 241,656,423.47
  5. Step 5: Solve for x
    x = 241,656,423.47/13,124.30
  6. Step 6: Final answer
    x = 18,412.90

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.