Home / 14,387.89-21,576.16-6,990.16

Finding the Fourth Proportional to 14,387.89, 21,576.16 and 6,990.16

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Solution

The fourth proportional to 14,387.89, 21,576.16 and 6,990.16 is: 10,482.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,387.89 : 21,576.16 = 6,990.16 : x
  2. Step 2: Convert to fraction form
    14,387.89/21,576.16 = 6,990.16/x
  3. Step 3: Cross multiply
    14,387.89x = 21,576.16 × 6,990.16
  4. Step 4: Simplify right side
    14,387.89x = 150,820,667.75
  5. Step 5: Solve for x
    x = 150,820,667.75/14,387.89
  6. Step 6: Final answer
    x = 10,482.48

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.