Home / 13,015.80-19,429.02-12,104.28

Finding the Fourth Proportional to 13,015.80, 19,429.02 and 12,104.28

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Solution

The fourth proportional to 13,015.80, 19,429.02 and 12,104.28 is: 18,068.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,015.80 : 19,429.02 = 12,104.28 : x
  2. Step 2: Convert to fraction form
    13,015.80/19,429.02 = 12,104.28/x
  3. Step 3: Cross multiply
    13,015.80x = 19,429.02 × 12,104.28
  4. Step 4: Simplify right side
    13,015.80x = 235,174,298.21
  5. Step 5: Solve for x
    x = 235,174,298.21/13,015.80
  6. Step 6: Final answer
    x = 18,068.37

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.