Home / 15,423.87-21,285.54-9,756.57

Finding the Fourth Proportional to 15,423.87, 21,285.54 and 9,756.57

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Solution

The fourth proportional to 15,423.87, 21,285.54 and 9,756.57 is: 13,464.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,423.87 : 21,285.54 = 9,756.57 : x
  2. Step 2: Convert to fraction form
    15,423.87/21,285.54 = 9,756.57/x
  3. Step 3: Cross multiply
    15,423.87x = 21,285.54 × 9,756.57
  4. Step 4: Simplify right side
    15,423.87x = 207,673,861.00
  5. Step 5: Solve for x
    x = 207,673,861.00/15,423.87
  6. Step 6: Final answer
    x = 13,464.45

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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.