Home / 21,710.63-29,960.66-12,278.99

Finding the Fourth Proportional to 21,710.63, 29,960.66 and 12,278.99

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Solution

The fourth proportional to 21,710.63, 29,960.66 and 12,278.99 is: 16,945.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,710.63 : 29,960.66 = 12,278.99 : x
  2. Step 2: Convert to fraction form
    21,710.63/29,960.66 = 12,278.99/x
  3. Step 3: Cross multiply
    21,710.63x = 29,960.66 × 12,278.99
  4. Step 4: Simplify right side
    21,710.63x = 367,886,644.53
  5. Step 5: Solve for x
    x = 367,886,644.53/21,710.63
  6. Step 6: Final answer
    x = 16,945.00

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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.