Home / 28,290.24-42,434.64-13,509.60

Finding the Fourth Proportional to 28,290.24, 42,434.64 and 13,509.60

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Solution

The fourth proportional to 28,290.24, 42,434.64 and 13,509.60 is: 20,264.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,290.24 : 42,434.64 = 13,509.60 : x
  2. Step 2: Convert to fraction form
    28,290.24/42,434.64 = 13,509.60/x
  3. Step 3: Cross multiply
    28,290.24x = 42,434.64 × 13,509.60
  4. Step 4: Simplify right side
    28,290.24x = 573,275,012.54
  5. Step 5: Solve for x
    x = 573,275,012.54/28,290.24
  6. Step 6: Final answer
    x = 20,264.06

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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.