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Finding the Fourth Proportional to 21,804.10, 32,706.15 and 19,384.90

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Solution

The fourth proportional to 21,804.10, 32,706.15 and 19,384.90 is: 29,077.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,804.10 : 32,706.15 = 19,384.90 : x
  2. Step 2: Convert to fraction form
    21,804.10/32,706.15 = 19,384.90/x
  3. Step 3: Cross multiply
    21,804.10x = 32,706.15 × 19,384.90
  4. Step 4: Simplify right side
    21,804.10x = 634,005,447.14
  5. Step 5: Solve for x
    x = 634,005,447.14/21,804.10
  6. Step 6: Final answer
    x = 29,077.35

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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.