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Finding the Fourth Proportional to 30,555.61, 42,168.70 and 16,944.22

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Solution

The fourth proportional to 30,555.61, 42,168.70 and 16,944.22 is: 23,384.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,555.61 : 42,168.70 = 16,944.22 : x
  2. Step 2: Convert to fraction form
    30,555.61/42,168.70 = 16,944.22/x
  3. Step 3: Cross multiply
    30,555.61x = 42,168.70 × 16,944.22
  4. Step 4: Simplify right side
    30,555.61x = 714,515,803.81
  5. Step 5: Solve for x
    x = 714,515,803.81/30,555.61
  6. Step 6: Final answer
    x = 23,384.11

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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.