Home / 13,784.78-20,681.02-4,425.33

Finding the Fourth Proportional to 13,784.78, 20,681.02 and 4,425.33

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Solution

The fourth proportional to 13,784.78, 20,681.02 and 4,425.33 is: 6,639.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,784.78 : 20,681.02 = 4,425.33 : x
  2. Step 2: Convert to fraction form
    13,784.78/20,681.02 = 4,425.33/x
  3. Step 3: Cross multiply
    13,784.78x = 20,681.02 × 4,425.33
  4. Step 4: Simplify right side
    13,784.78x = 91,520,421.32
  5. Step 5: Solve for x
    x = 91,520,421.32/13,784.78
  6. Step 6: Final answer
    x = 6,639.24

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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.