Home / 19,811.10-27,339.21-10,858.98

Finding the Fourth Proportional to 19,811.10, 27,339.21 and 10,858.98

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Solution

The fourth proportional to 19,811.10, 27,339.21 and 10,858.98 is: 14,985.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,811.10 : 27,339.21 = 10,858.98 : x
  2. Step 2: Convert to fraction form
    19,811.10/27,339.21 = 10,858.98/x
  3. Step 3: Cross multiply
    19,811.10x = 27,339.21 × 10,858.98
  4. Step 4: Simplify right side
    19,811.10x = 296,875,934.61
  5. Step 5: Solve for x
    x = 296,875,934.61/19,811.10
  6. Step 6: Final answer
    x = 14,985.33

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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.