Home / 20,802.96-28,708.20-12,417.36

Finding the Fourth Proportional to 20,802.96, 28,708.20 and 12,417.36

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Solution

The fourth proportional to 20,802.96, 28,708.20 and 12,417.36 is: 17,136.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,802.96 : 28,708.20 = 12,417.36 : x
  2. Step 2: Convert to fraction form
    20,802.96/28,708.20 = 12,417.36/x
  3. Step 3: Cross multiply
    20,802.96x = 28,708.20 × 12,417.36
  4. Step 4: Simplify right side
    20,802.96x = 356,480,054.35
  5. Step 5: Solve for x
    x = 356,480,054.35/20,802.96
  6. Step 6: Final answer
    x = 17,136.03

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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.