Home / 31,211.74-43,068.82-18,465.40

Finding the Fourth Proportional to 31,211.74, 43,068.82 and 18,465.40

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Solution

The fourth proportional to 31,211.74, 43,068.82 and 18,465.40 is: 25,480.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,211.74 : 43,068.82 = 18,465.40 : x
  2. Step 2: Convert to fraction form
    31,211.74/43,068.82 = 18,465.40/x
  3. Step 3: Cross multiply
    31,211.74x = 43,068.82 × 18,465.40
  4. Step 4: Simplify right side
    31,211.74x = 795,282,681.16
  5. Step 5: Solve for x
    x = 795,282,681.16/31,211.74
  6. Step 6: Final answer
    x = 25,480.25

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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.