Home / 15,423.99-21,280.62-10,393.89

Finding the Fourth Proportional to 15,423.99, 21,280.62 and 10,393.89

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Solution

The fourth proportional to 15,423.99, 21,280.62 and 10,393.89 is: 14,340.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,423.99 : 21,280.62 = 10,393.89 : x
  2. Step 2: Convert to fraction form
    15,423.99/21,280.62 = 10,393.89/x
  3. Step 3: Cross multiply
    15,423.99x = 21,280.62 × 10,393.89
  4. Step 4: Simplify right side
    15,423.99x = 221,188,423.41
  5. Step 5: Solve for x
    x = 221,188,423.41/15,423.99
  6. Step 6: Final answer
    x = 14,340.55

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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.