Home / 28,158.98-38,859.81-15,584.18

Finding the Fourth Proportional to 28,158.98, 38,859.81 and 15,584.18

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Solution

The fourth proportional to 28,158.98, 38,859.81 and 15,584.18 is: 21,506.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,158.98 : 38,859.81 = 15,584.18 : x
  2. Step 2: Convert to fraction form
    28,158.98/38,859.81 = 15,584.18/x
  3. Step 3: Cross multiply
    28,158.98x = 38,859.81 × 15,584.18
  4. Step 4: Simplify right side
    28,158.98x = 605,598,273.81
  5. Step 5: Solve for x
    x = 605,598,273.81/28,158.98
  6. Step 6: Final answer
    x = 21,506.40

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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.