Home / 28,088.64-38,758.56-15,989.36

Finding the Fourth Proportional to 28,088.64, 38,758.56 and 15,989.36

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Solution

The fourth proportional to 28,088.64, 38,758.56 and 15,989.36 is: 22,063.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,088.64 : 38,758.56 = 15,989.36 : x
  2. Step 2: Convert to fraction form
    28,088.64/38,758.56 = 15,989.36/x
  3. Step 3: Cross multiply
    28,088.64x = 38,758.56 × 15,989.36
  4. Step 4: Simplify right side
    28,088.64x = 619,724,568.92
  5. Step 5: Solve for x
    x = 619,724,568.92/28,088.64
  6. Step 6: Final answer
    x = 22,063.17

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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.