Home / 31,795.11-43,868.34-19,870.56

Finding the Fourth Proportional to 31,795.11, 43,868.34 and 19,870.56

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Solution

The fourth proportional to 31,795.11, 43,868.34 and 19,870.56 is: 27,415.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,795.11 : 43,868.34 = 19,870.56 : x
  2. Step 2: Convert to fraction form
    31,795.11/43,868.34 = 19,870.56/x
  3. Step 3: Cross multiply
    31,795.11x = 43,868.34 × 19,870.56
  4. Step 4: Simplify right side
    31,795.11x = 871,688,482.07
  5. Step 5: Solve for x
    x = 871,688,482.07/31,795.11
  6. Step 6: Final answer
    x = 27,415.80

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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.