Home / 20,983.51-28,957.26-11,423.35

Finding the Fourth Proportional to 20,983.51, 28,957.26 and 11,423.35

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Solution

The fourth proportional to 20,983.51, 28,957.26 and 11,423.35 is: 15,764.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,983.51 : 28,957.26 = 11,423.35 : x
  2. Step 2: Convert to fraction form
    20,983.51/28,957.26 = 11,423.35/x
  3. Step 3: Cross multiply
    20,983.51x = 28,957.26 × 11,423.35
  4. Step 4: Simplify right side
    20,983.51x = 330,788,916.02
  5. Step 5: Solve for x
    x = 330,788,916.02/20,983.51
  6. Step 6: Final answer
    x = 15,764.23

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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.