Home / 15,521.72-21,408.20-10,749.64

Finding the Fourth Proportional to 15,521.72, 21,408.20 and 10,749.64

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Solution

The fourth proportional to 15,521.72, 21,408.20 and 10,749.64 is: 14,826.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,521.72 : 21,408.20 = 10,749.64 : x
  2. Step 2: Convert to fraction form
    15,521.72/21,408.20 = 10,749.64/x
  3. Step 3: Cross multiply
    15,521.72x = 21,408.20 × 10,749.64
  4. Step 4: Simplify right side
    15,521.72x = 230,130,443.05
  5. Step 5: Solve for x
    x = 230,130,443.05/15,521.72
  6. Step 6: Final answer
    x = 14,826.35

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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.