Home / 9,827.80-14,720.10-6,890.20

Finding the Fourth Proportional to 9,827.80, 14,720.10 and 6,890.20

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Solution

The fourth proportional to 9,827.80, 14,720.10 and 6,890.20 is: 10,320.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,827.80 : 14,720.10 = 6,890.20 : x
  2. Step 2: Convert to fraction form
    9,827.80/14,720.10 = 6,890.20/x
  3. Step 3: Cross multiply
    9,827.80x = 14,720.10 × 6,890.20
  4. Step 4: Simplify right side
    9,827.80x = 101,424,433.02
  5. Step 5: Solve for x
    x = 101,424,433.02/9,827.80
  6. Step 6: Final answer
    x = 10,320.16

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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.