Home / 20,585.40-28,413.28-14,213.04

Finding the Fourth Proportional to 20,585.40, 28,413.28 and 14,213.04

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Solution

The fourth proportional to 20,585.40, 28,413.28 and 14,213.04 is: 19,617.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,585.40 : 28,413.28 = 14,213.04 : x
  2. Step 2: Convert to fraction form
    20,585.40/28,413.28 = 14,213.04/x
  3. Step 3: Cross multiply
    20,585.40x = 28,413.28 × 14,213.04
  4. Step 4: Simplify right side
    20,585.40x = 403,839,085.17
  5. Step 5: Solve for x
    x = 403,839,085.17/20,585.40
  6. Step 6: Final answer
    x = 19,617.74

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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.