Home / 28,261.87-39,001.87-15,516.24

Finding the Fourth Proportional to 28,261.87, 39,001.87 and 15,516.24

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Solution

The fourth proportional to 28,261.87, 39,001.87 and 15,516.24 is: 21,412.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,261.87 : 39,001.87 = 15,516.24 : x
  2. Step 2: Convert to fraction form
    28,261.87/39,001.87 = 15,516.24/x
  3. Step 3: Cross multiply
    28,261.87x = 39,001.87 × 15,516.24
  4. Step 4: Simplify right side
    28,261.87x = 605,162,248.51
  5. Step 5: Solve for x
    x = 605,162,248.51/28,261.87
  6. Step 6: Final answer
    x = 21,412.67

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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.