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Finding the Fourth Proportional to 30,866.63, 42,595.94 and 16,719.48

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Solution

The fourth proportional to 30,866.63, 42,595.94 and 16,719.48 is: 23,072.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,866.63 : 42,595.94 = 16,719.48 : x
  2. Step 2: Convert to fraction form
    30,866.63/42,595.94 = 16,719.48/x
  3. Step 3: Cross multiply
    30,866.63x = 42,595.94 × 16,719.48
  4. Step 4: Simplify right side
    30,866.63x = 712,182,008.71
  5. Step 5: Solve for x
    x = 712,182,008.71/30,866.63
  6. Step 6: Final answer
    x = 23,072.88

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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.