Home / 30,698.04-42,363.36-18,123.60

Finding the Fourth Proportional to 30,698.04, 42,363.36 and 18,123.60

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Solution

The fourth proportional to 30,698.04, 42,363.36 and 18,123.60 is: 25,010.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,698.04 : 42,363.36 = 18,123.60 : x
  2. Step 2: Convert to fraction form
    30,698.04/42,363.36 = 18,123.60/x
  3. Step 3: Cross multiply
    30,698.04x = 42,363.36 × 18,123.60
  4. Step 4: Simplify right side
    30,698.04x = 767,776,591.30
  5. Step 5: Solve for x
    x = 767,776,591.30/30,698.04
  6. Step 6: Final answer
    x = 25,010.61

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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.