Home / 15,540.04-21,447.40-8,828.40

Finding the Fourth Proportional to 15,540.04, 21,447.40 and 8,828.40

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Solution

The fourth proportional to 15,540.04, 21,447.40 and 8,828.40 is: 12,184.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,540.04 : 21,447.40 = 8,828.40 : x
  2. Step 2: Convert to fraction form
    15,540.04/21,447.40 = 8,828.40/x
  3. Step 3: Cross multiply
    15,540.04x = 21,447.40 × 8,828.40
  4. Step 4: Simplify right side
    15,540.04x = 189,346,226.16
  5. Step 5: Solve for x
    x = 189,346,226.16/15,540.04
  6. Step 6: Final answer
    x = 12,184.41

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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.