Home / 28,616.73-39,491.58-15,870.45

Finding the Fourth Proportional to 28,616.73, 39,491.58 and 15,870.45

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Solution

The fourth proportional to 28,616.73, 39,491.58 and 15,870.45 is: 21,901.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,616.73 : 39,491.58 = 15,870.45 : x
  2. Step 2: Convert to fraction form
    28,616.73/39,491.58 = 15,870.45/x
  3. Step 3: Cross multiply
    28,616.73x = 39,491.58 × 15,870.45
  4. Step 4: Simplify right side
    28,616.73x = 626,749,145.81
  5. Step 5: Solve for x
    x = 626,749,145.81/28,616.73
  6. Step 6: Final answer
    x = 21,901.49

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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.