Home / 39,399.84-54,376.56-28,784.16

Finding the Fourth Proportional to 39,399.84, 54,376.56 and 28,784.16

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Solution

The fourth proportional to 39,399.84, 54,376.56 and 28,784.16 is: 39,725.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,399.84 : 54,376.56 = 28,784.16 : x
  2. Step 2: Convert to fraction form
    39,399.84/54,376.56 = 28,784.16/x
  3. Step 3: Cross multiply
    39,399.84x = 54,376.56 × 28,784.16
  4. Step 4: Simplify right side
    39,399.84x = 1,565,183,603.29
  5. Step 5: Solve for x
    x = 1,565,183,603.29/39,399.84
  6. Step 6: Final answer
    x = 39,725.63

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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.