Home / 30,421.24-42,010.04-28,764.59

Finding the Fourth Proportional to 30,421.24, 42,010.04 and 28,764.59

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Solution

The fourth proportional to 30,421.24, 42,010.04 and 28,764.59 is: 39,722.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,421.24 : 42,010.04 = 28,764.59 : x
  2. Step 2: Convert to fraction form
    30,421.24/42,010.04 = 28,764.59/x
  3. Step 3: Cross multiply
    30,421.24x = 42,010.04 × 28,764.59
  4. Step 4: Simplify right side
    30,421.24x = 1,208,401,438.34
  5. Step 5: Solve for x
    x = 1,208,401,438.34/30,421.24
  6. Step 6: Final answer
    x = 39,722.30

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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.