Home / 39,055.95-53,896.55-21,150.81

Finding the Fourth Proportional to 39,055.95, 53,896.55 and 21,150.81

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Solution

The fourth proportional to 39,055.95, 53,896.55 and 21,150.81 is: 29,187.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,055.95 : 53,896.55 = 21,150.81 : x
  2. Step 2: Convert to fraction form
    39,055.95/53,896.55 = 21,150.81/x
  3. Step 3: Cross multiply
    39,055.95x = 53,896.55 × 21,150.81
  4. Step 4: Simplify right side
    39,055.95x = 1,139,955,582.95
  5. Step 5: Solve for x
    x = 1,139,955,582.95/39,055.95
  6. Step 6: Final answer
    x = 29,187.76

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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.