Home / 15,420.33-23,137.54-8,389.80

Finding the Fourth Proportional to 15,420.33, 23,137.54 and 8,389.80

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Solution

The fourth proportional to 15,420.33, 23,137.54 and 8,389.80 is: 12,588.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,420.33 : 23,137.54 = 8,389.80 : x
  2. Step 2: Convert to fraction form
    15,420.33/23,137.54 = 8,389.80/x
  3. Step 3: Cross multiply
    15,420.33x = 23,137.54 × 8,389.80
  4. Step 4: Simplify right side
    15,420.33x = 194,119,312.12
  5. Step 5: Solve for x
    x = 194,119,312.12/15,420.33
  6. Step 6: Final answer
    x = 12,588.53

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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.