Home / 31,322.28-43,215.14-19,381.40

Finding the Fourth Proportional to 31,322.28, 43,215.14 and 19,381.40

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Solution

The fourth proportional to 31,322.28, 43,215.14 and 19,381.40 is: 26,740.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,322.28 : 43,215.14 = 19,381.40 : x
  2. Step 2: Convert to fraction form
    31,322.28/43,215.14 = 19,381.40/x
  3. Step 3: Cross multiply
    31,322.28x = 43,215.14 × 19,381.40
  4. Step 4: Simplify right side
    31,322.28x = 837,569,914.40
  5. Step 5: Solve for x
    x = 837,569,914.40/31,322.28
  6. Step 6: Final answer
    x = 26,740.39

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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.