Home / 28,121.30-42,133.35-13,298.30

Finding the Fourth Proportional to 28,121.30, 42,133.35 and 13,298.30

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Solution

The fourth proportional to 28,121.30, 42,133.35 and 13,298.30 is: 19,924.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,121.30 : 42,133.35 = 13,298.30 : x
  2. Step 2: Convert to fraction form
    28,121.30/42,133.35 = 13,298.30/x
  3. Step 3: Cross multiply
    28,121.30x = 42,133.35 × 13,298.30
  4. Step 4: Simplify right side
    28,121.30x = 560,301,928.31
  5. Step 5: Solve for x
    x = 560,301,928.31/28,121.30
  6. Step 6: Final answer
    x = 19,924.47

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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.