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Finding the Fourth Proportional to 21,369.30, 32,053.95 and 21,077.70

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Solution

The fourth proportional to 21,369.30, 32,053.95 and 21,077.70 is: 31,616.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,369.30 : 32,053.95 = 21,077.70 : x
  2. Step 2: Convert to fraction form
    21,369.30/32,053.95 = 21,077.70/x
  3. Step 3: Cross multiply
    21,369.30x = 32,053.95 × 21,077.70
  4. Step 4: Simplify right side
    21,369.30x = 675,623,541.92
  5. Step 5: Solve for x
    x = 675,623,541.92/21,369.30
  6. Step 6: Final answer
    x = 31,616.55

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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.