Home / 15,127.53-20,875.62-8,412.90

Finding the Fourth Proportional to 15,127.53, 20,875.62 and 8,412.90

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Solution

The fourth proportional to 15,127.53, 20,875.62 and 8,412.90 is: 11,609.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,127.53 : 20,875.62 = 8,412.90 : x
  2. Step 2: Convert to fraction form
    15,127.53/20,875.62 = 8,412.90/x
  3. Step 3: Cross multiply
    15,127.53x = 20,875.62 × 8,412.90
  4. Step 4: Simplify right side
    15,127.53x = 175,624,503.50
  5. Step 5: Solve for x
    x = 175,624,503.50/15,127.53
  6. Step 6: Final answer
    x = 11,609.60

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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.