Home / 12,280.28-18,424.04-5,710.40

Finding the Fourth Proportional to 12,280.28, 18,424.04 and 5,710.40

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Solution

The fourth proportional to 12,280.28, 18,424.04 and 5,710.40 is: 8,567.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,280.28 : 18,424.04 = 5,710.40 : x
  2. Step 2: Convert to fraction form
    12,280.28/18,424.04 = 5,710.40/x
  3. Step 3: Cross multiply
    12,280.28x = 18,424.04 × 5,710.40
  4. Step 4: Simplify right side
    12,280.28x = 105,208,638.02
  5. Step 5: Solve for x
    x = 105,208,638.02/12,280.28
  6. Step 6: Final answer
    x = 8,567.28

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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.