Home / 20,457.89-30,687.18-6,417.58

Finding the Fourth Proportional to 20,457.89, 30,687.18 and 6,417.58

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Solution

The fourth proportional to 20,457.89, 30,687.18 and 6,417.58 is: 9,626.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,457.89 : 30,687.18 = 6,417.58 : x
  2. Step 2: Convert to fraction form
    20,457.89/30,687.18 = 6,417.58/x
  3. Step 3: Cross multiply
    20,457.89x = 30,687.18 × 6,417.58
  4. Step 4: Simplify right side
    20,457.89x = 196,937,432.62
  5. Step 5: Solve for x
    x = 196,937,432.62/20,457.89
  6. Step 6: Final answer
    x = 9,626.48

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.