Home / 39,033-53,865.51-21,128.01

Finding the Fourth Proportional to 39,033, 53,865.51 and 21,128.01

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Solution

The fourth proportional to 39,033, 53,865.51 and 21,128.01 is: 29,156.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,033 : 53,865.51 = 21,128.01 : x
  2. Step 2: Convert to fraction form
    39,033/53,865.51 = 21,128.01/x
  3. Step 3: Cross multiply
    39,033x = 53,865.51 × 21,128.01
  4. Step 4: Simplify right side
    39,033x = 1,138,071,033.94
  5. Step 5: Solve for x
    x = 1,138,071,033.94/39,033
  6. Step 6: Final answer
    x = 29,156.64

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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.