Home / 9,001.21-12,420.43-5,021.55

Finding the Fourth Proportional to 9,001.21, 12,420.43 and 5,021.55

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Solution

The fourth proportional to 9,001.21, 12,420.43 and 5,021.55 is: 6,929.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,001.21 : 12,420.43 = 5,021.55 : x
  2. Step 2: Convert to fraction form
    9,001.21/12,420.43 = 5,021.55/x
  3. Step 3: Cross multiply
    9,001.21x = 12,420.43 × 5,021.55
  4. Step 4: Simplify right side
    9,001.21x = 62,369,797.71
  5. Step 5: Solve for x
    x = 62,369,797.71/9,001.21
  6. Step 6: Final answer
    x = 6,929.05

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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.