Home / 31,681.41-43,702.81-20,352.57

Finding the Fourth Proportional to 31,681.41, 43,702.81 and 20,352.57

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Solution

The fourth proportional to 31,681.41, 43,702.81 and 20,352.57 is: 28,075.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,681.41 : 43,702.81 = 20,352.57 : x
  2. Step 2: Convert to fraction form
    31,681.41/43,702.81 = 20,352.57/x
  3. Step 3: Cross multiply
    31,681.41x = 43,702.81 × 20,352.57
  4. Step 4: Simplify right side
    31,681.41x = 889,464,499.72
  5. Step 5: Solve for x
    x = 889,464,499.72/31,681.41
  6. Step 6: Final answer
    x = 28,075.28

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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.