Home / 15,774.64-21,778.20-10,476.72

Finding the Fourth Proportional to 15,774.64, 21,778.20 and 10,476.72

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Solution

The fourth proportional to 15,774.64, 21,778.20 and 10,476.72 is: 14,463.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,774.64 : 21,778.20 = 10,476.72 : x
  2. Step 2: Convert to fraction form
    15,774.64/21,778.20 = 10,476.72/x
  3. Step 3: Cross multiply
    15,774.64x = 21,778.20 × 10,476.72
  4. Step 4: Simplify right side
    15,774.64x = 228,164,103.50
  5. Step 5: Solve for x
    x = 228,164,103.50/15,774.64
  6. Step 6: Final answer
    x = 14,463.98

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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.