Home / 21,478.42-29,639.82-12,047.01

Finding the Fourth Proportional to 21,478.42, 29,639.82 and 12,047.01

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Solution

The fourth proportional to 21,478.42, 29,639.82 and 12,047.01 is: 16,624.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,478.42 : 29,639.82 = 12,047.01 : x
  2. Step 2: Convert to fraction form
    21,478.42/29,639.82 = 12,047.01/x
  3. Step 3: Cross multiply
    21,478.42x = 29,639.82 × 12,047.01
  4. Step 4: Simplify right side
    21,478.42x = 357,071,207.94
  5. Step 5: Solve for x
    x = 357,071,207.94/21,478.42
  6. Step 6: Final answer
    x = 16,624.65

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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.