Home / 30,452.04-42,036.76-18,519.20

Finding the Fourth Proportional to 30,452.04, 42,036.76 and 18,519.20

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Solution

The fourth proportional to 30,452.04, 42,036.76 and 18,519.20 is: 25,564.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,452.04 : 42,036.76 = 18,519.20 : x
  2. Step 2: Convert to fraction form
    30,452.04/42,036.76 = 18,519.20/x
  3. Step 3: Cross multiply
    30,452.04x = 42,036.76 × 18,519.20
  4. Step 4: Simplify right side
    30,452.04x = 778,487,165.79
  5. Step 5: Solve for x
    x = 778,487,165.79/30,452.04
  6. Step 6: Final answer
    x = 25,564.37

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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.