Home / 28,639.74-42,971.85-15,501.42

Finding the Fourth Proportional to 28,639.74, 42,971.85 and 15,501.42

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Solution

The fourth proportional to 28,639.74, 42,971.85 and 15,501.42 is: 23,258.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,639.74 : 42,971.85 = 15,501.42 : x
  2. Step 2: Convert to fraction form
    28,639.74/42,971.85 = 15,501.42/x
  3. Step 3: Cross multiply
    28,639.74x = 42,971.85 × 15,501.42
  4. Step 4: Simplify right side
    28,639.74x = 666,124,695.03
  5. Step 5: Solve for x
    x = 666,124,695.03/28,639.74
  6. Step 6: Final answer
    x = 23,258.75

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.