Home / 12,285.48-16,943.53-10,380.63

Finding the Fourth Proportional to 12,285.48, 16,943.53 and 10,380.63

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Solution

The fourth proportional to 12,285.48, 16,943.53 and 10,380.63 is: 14,316.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,285.48 : 16,943.53 = 10,380.63 : x
  2. Step 2: Convert to fraction form
    12,285.48/16,943.53 = 10,380.63/x
  3. Step 3: Cross multiply
    12,285.48x = 16,943.53 × 10,380.63
  4. Step 4: Simplify right side
    12,285.48x = 175,884,515.82
  5. Step 5: Solve for x
    x = 175,884,515.82/12,285.48
  6. Step 6: Final answer
    x = 14,316.45

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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.