Home / 14,280.12-21,421.64-4,918.92

Finding the Fourth Proportional to 14,280.12, 21,421.64 and 4,918.92

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Solution

The fourth proportional to 14,280.12, 21,421.64 and 4,918.92 is: 7,378.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,280.12 : 21,421.64 = 4,918.92 : x
  2. Step 2: Convert to fraction form
    14,280.12/21,421.64 = 4,918.92/x
  3. Step 3: Cross multiply
    14,280.12x = 21,421.64 × 4,918.92
  4. Step 4: Simplify right side
    14,280.12x = 105,371,333.43
  5. Step 5: Solve for x
    x = 105,371,333.43/14,280.12
  6. Step 6: Final answer
    x = 7,378.88

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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.