Home / 21,582.28-29,783.52-12,153.88

Finding the Fourth Proportional to 21,582.28, 29,783.52 and 12,153.88

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Solution

The fourth proportional to 21,582.28, 29,783.52 and 12,153.88 is: 16,772.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,582.28 : 29,783.52 = 12,153.88 : x
  2. Step 2: Convert to fraction form
    21,582.28/29,783.52 = 12,153.88/x
  3. Step 3: Cross multiply
    21,582.28x = 29,783.52 × 12,153.88
  4. Step 4: Simplify right side
    21,582.28x = 361,985,328.06
  5. Step 5: Solve for x
    x = 361,985,328.06/21,582.28
  6. Step 6: Final answer
    x = 16,772.34

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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.