Home / 15,828.08-21,828.30-13,589.24

Finding the Fourth Proportional to 15,828.08, 21,828.30 and 13,589.24

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Solution

The fourth proportional to 15,828.08, 21,828.30 and 13,589.24 is: 18,740.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,828.08 : 21,828.30 = 13,589.24 : x
  2. Step 2: Convert to fraction form
    15,828.08/21,828.30 = 13,589.24/x
  3. Step 3: Cross multiply
    15,828.08x = 21,828.30 × 13,589.24
  4. Step 4: Simplify right side
    15,828.08x = 296,630,007.49
  5. Step 5: Solve for x
    x = 296,630,007.49/15,828.08
  6. Step 6: Final answer
    x = 18,740.74

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.