Home / 31,290.09-46,921.10-18,645.81

Finding the Fourth Proportional to 31,290.09, 46,921.10 and 18,645.81

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Solution

The fourth proportional to 31,290.09, 46,921.10 and 18,645.81 is: 27,960.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,290.09 : 46,921.10 = 18,645.81 : x
  2. Step 2: Convert to fraction form
    31,290.09/46,921.10 = 18,645.81/x
  3. Step 3: Cross multiply
    31,290.09x = 46,921.10 × 18,645.81
  4. Step 4: Simplify right side
    31,290.09x = 874,881,915.59
  5. Step 5: Solve for x
    x = 874,881,915.59/31,290.09
  6. Step 6: Final answer
    x = 27,960.35

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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.