Home / 38,977.95-53,789.62-21,072.95

Finding the Fourth Proportional to 38,977.95, 53,789.62 and 21,072.95

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Solution

The fourth proportional to 38,977.95, 53,789.62 and 21,072.95 is: 29,080.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,977.95 : 53,789.62 = 21,072.95 : x
  2. Step 2: Convert to fraction form
    38,977.95/53,789.62 = 21,072.95/x
  3. Step 3: Cross multiply
    38,977.95x = 53,789.62 × 21,072.95
  4. Step 4: Simplify right side
    38,977.95x = 1,133,506,054.57
  5. Step 5: Solve for x
    x = 1,133,506,054.57/38,977.95
  6. Step 6: Final answer
    x = 29,080.70

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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.