Home / 15,299.47-21,114.30-9,329.50

Finding the Fourth Proportional to 15,299.47, 21,114.30 and 9,329.50

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Solution

The fourth proportional to 15,299.47, 21,114.30 and 9,329.50 is: 12,875.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,299.47 : 21,114.30 = 9,329.50 : x
  2. Step 2: Convert to fraction form
    15,299.47/21,114.30 = 9,329.50/x
  3. Step 3: Cross multiply
    15,299.47x = 21,114.30 × 9,329.50
  4. Step 4: Simplify right side
    15,299.47x = 196,985,861.85
  5. Step 5: Solve for x
    x = 196,985,861.85/15,299.47
  6. Step 6: Final answer
    x = 12,875.34

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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.