Home / 21,621.84-32,420.52-12,862.32

Finding the Fourth Proportional to 21,621.84, 32,420.52 and 12,862.32

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Solution

The fourth proportional to 21,621.84, 32,420.52 and 12,862.32 is: 19,286.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,621.84 : 32,420.52 = 12,862.32 : x
  2. Step 2: Convert to fraction form
    21,621.84/32,420.52 = 12,862.32/x
  3. Step 3: Cross multiply
    21,621.84x = 32,420.52 × 12,862.32
  4. Step 4: Simplify right side
    21,621.84x = 417,003,102.81
  5. Step 5: Solve for x
    x = 417,003,102.81/21,621.84
  6. Step 6: Final answer
    x = 19,286.20

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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.