Home / 28,005.42-38,647.35-15,258.57

Finding the Fourth Proportional to 28,005.42, 38,647.35 and 15,258.57

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Solution

The fourth proportional to 28,005.42, 38,647.35 and 15,258.57 is: 21,056.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,005.42 : 38,647.35 = 15,258.57 : x
  2. Step 2: Convert to fraction form
    28,005.42/38,647.35 = 15,258.57/x
  3. Step 3: Cross multiply
    28,005.42x = 38,647.35 × 15,258.57
  4. Step 4: Simplify right side
    28,005.42x = 589,703,295.29
  5. Step 5: Solve for x
    x = 589,703,295.29/28,005.42
  6. Step 6: Final answer
    x = 21,056.76

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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.