Home / 28,047.25-38,705.93-15,300.64

Finding the Fourth Proportional to 28,047.25, 38,705.93 and 15,300.64

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Solution

The fourth proportional to 28,047.25, 38,705.93 and 15,300.64 is: 21,115.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,047.25 : 38,705.93 = 15,300.64 : x
  2. Step 2: Convert to fraction form
    28,047.25/38,705.93 = 15,300.64/x
  3. Step 3: Cross multiply
    28,047.25x = 38,705.93 × 15,300.64
  4. Step 4: Simplify right side
    28,047.25x = 592,225,500.80
  5. Step 5: Solve for x
    x = 592,225,500.80/28,047.25
  6. Step 6: Final answer
    x = 21,115.28

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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.