Home / 39,369.60-54,328.40-21,464.16

Finding the Fourth Proportional to 39,369.60, 54,328.40 and 21,464.16

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Solution

The fourth proportional to 39,369.60, 54,328.40 and 21,464.16 is: 29,619.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,369.60 : 54,328.40 = 21,464.16 : x
  2. Step 2: Convert to fraction form
    39,369.60/54,328.40 = 21,464.16/x
  3. Step 3: Cross multiply
    39,369.60x = 54,328.40 × 21,464.16
  4. Step 4: Simplify right side
    39,369.60x = 1,166,113,470.14
  5. Step 5: Solve for x
    x = 1,166,113,470.14/39,369.60
  6. Step 6: Final answer
    x = 29,619.64

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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.