Home / 27,803.47-38,371.55-15,868.61

Finding the Fourth Proportional to 27,803.47, 38,371.55 and 15,868.61

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Solution

The fourth proportional to 27,803.47, 38,371.55 and 15,868.61 is: 21,900.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,803.47 : 38,371.55 = 15,868.61 : x
  2. Step 2: Convert to fraction form
    27,803.47/38,371.55 = 15,868.61/x
  3. Step 3: Cross multiply
    27,803.47x = 38,371.55 × 15,868.61
  4. Step 4: Simplify right side
    27,803.47x = 608,903,178.63
  5. Step 5: Solve for x
    x = 608,903,178.63/27,803.47
  6. Step 6: Final answer
    x = 21,900.26

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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.