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Finding the Fourth Proportional to 34,368, 47,420.16 and 20,221.44

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Solution

The fourth proportional to 34,368, 47,420.16 and 20,221.44 is: 27,901.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    34,368 : 47,420.16 = 20,221.44 : x
  2. Step 2: Convert to fraction form
    34,368/47,420.16 = 20,221.44/x
  3. Step 3: Cross multiply
    34,368x = 47,420.16 × 20,221.44
  4. Step 4: Simplify right side
    34,368x = 958,903,920.23
  5. Step 5: Solve for x
    x = 958,903,920.23/34,368
  6. Step 6: Final answer
    x = 27,901.07

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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.