Home / 20,841.43-28,762.10-12,457.75

Finding the Fourth Proportional to 20,841.43, 28,762.10 and 12,457.75

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Solution

The fourth proportional to 20,841.43, 28,762.10 and 12,457.75 is: 17,192.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,841.43 : 28,762.10 = 12,457.75 : x
  2. Step 2: Convert to fraction form
    20,841.43/28,762.10 = 12,457.75/x
  3. Step 3: Cross multiply
    20,841.43x = 28,762.10 × 12,457.75
  4. Step 4: Simplify right side
    20,841.43x = 358,311,051.28
  5. Step 5: Solve for x
    x = 358,311,051.28/20,841.43
  6. Step 6: Final answer
    x = 17,192.25

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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.