Home / 28,056.64-38,718.08-15,481.40

Finding the Fourth Proportional to 28,056.64, 38,718.08 and 15,481.40

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Solution

The fourth proportional to 28,056.64, 38,718.08 and 15,481.40 is: 21,364.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,056.64 : 38,718.08 = 15,481.40 : x
  2. Step 2: Convert to fraction form
    28,056.64/38,718.08 = 15,481.40/x
  3. Step 3: Cross multiply
    28,056.64x = 38,718.08 × 15,481.40
  4. Step 4: Simplify right side
    28,056.64x = 599,410,083.71
  5. Step 5: Solve for x
    x = 599,410,083.71/28,056.64
  6. Step 6: Final answer
    x = 21,364.29

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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.