Home / 28,946.68-39,908.14-20,873.60

Finding the Fourth Proportional to 28,946.68, 39,908.14 and 20,873.60

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Solution

The fourth proportional to 28,946.68, 39,908.14 and 20,873.60 is: 28,777.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,946.68 : 39,908.14 = 20,873.60 : x
  2. Step 2: Convert to fraction form
    28,946.68/39,908.14 = 20,873.60/x
  3. Step 3: Cross multiply
    28,946.68x = 39,908.14 × 20,873.60
  4. Step 4: Simplify right side
    28,946.68x = 833,026,551.10
  5. Step 5: Solve for x
    x = 833,026,551.10/28,946.68
  6. Step 6: Final answer
    x = 28,777.97

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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.