Home / 27,988.92-38,627.44-20,903.04

Finding the Fourth Proportional to 27,988.92, 38,627.44 and 20,903.04

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Solution

The fourth proportional to 27,988.92, 38,627.44 and 20,903.04 is: 28,848.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,988.92 : 38,627.44 = 20,903.04 : x
  2. Step 2: Convert to fraction form
    27,988.92/38,627.44 = 20,903.04/x
  3. Step 3: Cross multiply
    27,988.92x = 38,627.44 × 20,903.04
  4. Step 4: Simplify right side
    27,988.92x = 807,430,871.16
  5. Step 5: Solve for x
    x = 807,430,871.16/27,988.92
  6. Step 6: Final answer
    x = 28,848.23

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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.