Home / 20,946.93-31,427.88-13,038.15

Finding the Fourth Proportional to 20,946.93, 31,427.88 and 13,038.15

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Solution

The fourth proportional to 20,946.93, 31,427.88 and 13,038.15 is: 19,561.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,946.93 : 31,427.88 = 13,038.15 : x
  2. Step 2: Convert to fraction form
    20,946.93/31,427.88 = 13,038.15/x
  3. Step 3: Cross multiply
    20,946.93x = 31,427.88 × 13,038.15
  4. Step 4: Simplify right side
    20,946.93x = 409,761,413.62
  5. Step 5: Solve for x
    x = 409,761,413.62/20,946.93
  6. Step 6: Final answer
    x = 19,561.88

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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.