Home / 39,055.20-53,895.52-21,150.08

Finding the Fourth Proportional to 39,055.20, 53,895.52 and 21,150.08

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Solution

The fourth proportional to 39,055.20, 53,895.52 and 21,150.08 is: 29,186.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,055.20 : 53,895.52 = 21,150.08 : x
  2. Step 2: Convert to fraction form
    39,055.20/53,895.52 = 21,150.08/x
  3. Step 3: Cross multiply
    39,055.20x = 53,895.52 × 21,150.08
  4. Step 4: Simplify right side
    39,055.20x = 1,139,894,559.64
  5. Step 5: Solve for x
    x = 1,139,894,559.64/39,055.20
  6. Step 6: Final answer
    x = 29,186.76

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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.