Home / 20,985.40-31,466.58-14,413.24

Finding the Fourth Proportional to 20,985.40, 31,466.58 and 14,413.24

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Solution

The fourth proportional to 20,985.40, 31,466.58 and 14,413.24 is: 21,611.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,985.40 : 31,466.58 = 14,413.24 : x
  2. Step 2: Convert to fraction form
    20,985.40/31,466.58 = 14,413.24/x
  3. Step 3: Cross multiply
    20,985.40x = 31,466.58 × 14,413.24
  4. Step 4: Simplify right side
    20,985.40x = 453,535,369.52
  5. Step 5: Solve for x
    x = 453,535,369.52/20,985.40
  6. Step 6: Final answer
    x = 21,611.95

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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.