Home / 21,842.24-32,722.24-12,931.20

Finding the Fourth Proportional to 21,842.24, 32,722.24 and 12,931.20

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Solution

The fourth proportional to 21,842.24, 32,722.24 and 12,931.20 is: 19,372.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,842.24 : 32,722.24 = 12,931.20 : x
  2. Step 2: Convert to fraction form
    21,842.24/32,722.24 = 12,931.20/x
  3. Step 3: Cross multiply
    21,842.24x = 32,722.24 × 12,931.20
  4. Step 4: Simplify right side
    21,842.24x = 423,137,829.89
  5. Step 5: Solve for x
    x = 423,137,829.89/21,842.24
  6. Step 6: Final answer
    x = 19,372.46

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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.