Home / 39,555.51-54,586.47-21,406.20

Finding the Fourth Proportional to 39,555.51, 54,586.47 and 21,406.20

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Solution

The fourth proportional to 39,555.51, 54,586.47 and 21,406.20 is: 29,540.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,555.51 : 54,586.47 = 21,406.20 : x
  2. Step 2: Convert to fraction form
    39,555.51/54,586.47 = 21,406.20/x
  3. Step 3: Cross multiply
    39,555.51x = 54,586.47 × 21,406.20
  4. Step 4: Simplify right side
    39,555.51x = 1,168,488,894.11
  5. Step 5: Solve for x
    x = 1,168,488,894.11/39,555.51
  6. Step 6: Final answer
    x = 29,540.48

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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.