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Finding the Fourth Proportional to 28,347.84, 42,473.16 and 20,012.94

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Solution

The fourth proportional to 28,347.84, 42,473.16 and 20,012.94 is: 29,985.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,347.84 : 42,473.16 = 20,012.94 : x
  2. Step 2: Convert to fraction form
    28,347.84/42,473.16 = 20,012.94/x
  3. Step 3: Cross multiply
    28,347.84x = 42,473.16 × 20,012.94
  4. Step 4: Simplify right side
    28,347.84x = 850,012,802.69
  5. Step 5: Solve for x
    x = 850,012,802.69/28,347.84
  6. Step 6: Final answer
    x = 29,985.10

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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.