Home / 38,935.68-53,731.20-21,030.68

Finding the Fourth Proportional to 38,935.68, 53,731.20 and 21,030.68

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Solution

The fourth proportional to 38,935.68, 53,731.20 and 21,030.68 is: 29,022.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,935.68 : 53,731.20 = 21,030.68 : x
  2. Step 2: Convert to fraction form
    38,935.68/53,731.20 = 21,030.68/x
  3. Step 3: Cross multiply
    38,935.68x = 53,731.20 × 21,030.68
  4. Step 4: Simplify right side
    38,935.68x = 1,130,003,673.22
  5. Step 5: Solve for x
    x = 1,130,003,673.22/38,935.68
  6. Step 6: Final answer
    x = 29,022.32

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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.