Home / 30,470.58-42,030.90-18,542.25

Finding the Fourth Proportional to 30,470.58, 42,030.90 and 18,542.25

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Solution

The fourth proportional to 30,470.58, 42,030.90 and 18,542.25 is: 25,577.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,470.58 : 42,030.90 = 18,542.25 : x
  2. Step 2: Convert to fraction form
    30,470.58/42,030.90 = 18,542.25/x
  3. Step 3: Cross multiply
    30,470.58x = 42,030.90 × 18,542.25
  4. Step 4: Simplify right side
    30,470.58x = 779,347,455.53
  5. Step 5: Solve for x
    x = 779,347,455.53/30,470.58
  6. Step 6: Final answer
    x = 25,577.05

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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.