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Finding the Fourth Proportional to 30,869.70, 42,600.21 and 17,440.98

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Solution

The fourth proportional to 30,869.70, 42,600.21 and 17,440.98 is: 24,068.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,869.70 : 42,600.21 = 17,440.98 : x
  2. Step 2: Convert to fraction form
    30,869.70/42,600.21 = 17,440.98/x
  3. Step 3: Cross multiply
    30,869.70x = 42,600.21 × 17,440.98
  4. Step 4: Simplify right side
    30,869.70x = 742,989,410.61
  5. Step 5: Solve for x
    x = 742,989,410.61/30,869.70
  6. Step 6: Final answer
    x = 24,068.57

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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.