Home / 28,059.89-38,722.88-15,313.18

Finding the Fourth Proportional to 28,059.89, 38,722.88 and 15,313.18

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Solution

The fourth proportional to 28,059.89, 38,722.88 and 15,313.18 is: 21,132.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,059.89 : 38,722.88 = 15,313.18 : x
  2. Step 2: Convert to fraction form
    28,059.89/38,722.88 = 15,313.18/x
  3. Step 3: Cross multiply
    28,059.89x = 38,722.88 × 15,313.18
  4. Step 4: Simplify right side
    28,059.89x = 592,970,258.19
  5. Step 5: Solve for x
    x = 592,970,258.19/28,059.89
  6. Step 6: Final answer
    x = 21,132.31

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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.