Home / 30,532.14-42,133.77-19,901.70

Finding the Fourth Proportional to 30,532.14, 42,133.77 and 19,901.70

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Solution

The fourth proportional to 30,532.14, 42,133.77 and 19,901.70 is: 27,463.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,532.14 : 42,133.77 = 19,901.70 : x
  2. Step 2: Convert to fraction form
    30,532.14/42,133.77 = 19,901.70/x
  3. Step 3: Cross multiply
    30,532.14x = 42,133.77 × 19,901.70
  4. Step 4: Simplify right side
    30,532.14x = 838,533,650.41
  5. Step 5: Solve for x
    x = 838,533,650.41/30,532.14
  6. Step 6: Final answer
    x = 27,463.97

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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.