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Finding the Fourth Proportional to 21,503.69, 32,240.80 and 10,953.29

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Solution

The fourth proportional to 21,503.69, 32,240.80 and 10,953.29 is: 16,422.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,503.69 : 32,240.80 = 10,953.29 : x
  2. Step 2: Convert to fraction form
    21,503.69/32,240.80 = 10,953.29/x
  3. Step 3: Cross multiply
    21,503.69x = 32,240.80 × 10,953.29
  4. Step 4: Simplify right side
    21,503.69x = 353,142,643.64
  5. Step 5: Solve for x
    x = 353,142,643.64/21,503.69
  6. Step 6: Final answer
    x = 16,422.42

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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.