Home / 39,903.10-55,064.06-21,998.08

Finding the Fourth Proportional to 39,903.10, 55,064.06 and 21,998.08

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Solution

The fourth proportional to 39,903.10, 55,064.06 and 21,998.08 is: 30,356.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,903.10 : 55,064.06 = 21,998.08 : x
  2. Step 2: Convert to fraction form
    39,903.10/55,064.06 = 21,998.08/x
  3. Step 3: Cross multiply
    39,903.10x = 55,064.06 × 21,998.08
  4. Step 4: Simplify right side
    39,903.10x = 1,211,303,597.00
  5. Step 5: Solve for x
    x = 1,211,303,597.00/39,903.10
  6. Step 6: Final answer
    x = 30,356.13

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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.