Home / 13,286.80-19,931.64-4,970.80

Finding the Fourth Proportional to 13,286.80, 19,931.64 and 4,970.80

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Solution

The fourth proportional to 13,286.80, 19,931.64 and 4,970.80 is: 7,456.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,286.80 : 19,931.64 = 4,970.80 : x
  2. Step 2: Convert to fraction form
    13,286.80/19,931.64 = 4,970.80/x
  3. Step 3: Cross multiply
    13,286.80x = 19,931.64 × 4,970.80
  4. Step 4: Simplify right side
    13,286.80x = 99,076,196.11
  5. Step 5: Solve for x
    x = 99,076,196.11/13,286.80
  6. Step 6: Final answer
    x = 7,456.74

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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.