Home / 30,821.78-42,534.11-16,674.63

Finding the Fourth Proportional to 30,821.78, 42,534.11 and 16,674.63

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Solution

The fourth proportional to 30,821.78, 42,534.11 and 16,674.63 is: 23,011.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,821.78 : 42,534.11 = 16,674.63 : x
  2. Step 2: Convert to fraction form
    30,821.78/42,534.11 = 16,674.63/x
  3. Step 3: Cross multiply
    30,821.78x = 42,534.11 × 16,674.63
  4. Step 4: Simplify right side
    30,821.78x = 709,240,428.81
  5. Step 5: Solve for x
    x = 709,240,428.81/30,821.78
  6. Step 6: Final answer
    x = 23,011.01

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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.