Home / 21,865.08-32,823.68-20,973.88

Finding the Fourth Proportional to 21,865.08, 32,823.68 and 20,973.88

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Solution

The fourth proportional to 21,865.08, 32,823.68 and 20,973.88 is: 31,485.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,865.08 : 32,823.68 = 20,973.88 : x
  2. Step 2: Convert to fraction form
    21,865.08/32,823.68 = 20,973.88/x
  3. Step 3: Cross multiply
    21,865.08x = 32,823.68 × 20,973.88
  4. Step 4: Simplify right side
    21,865.08x = 688,439,925.48
  5. Step 5: Solve for x
    x = 688,439,925.48/21,865.08
  6. Step 6: Final answer
    x = 31,485.82

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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.