Home / 15,677.40-21,635.36-8,870.96

Finding the Fourth Proportional to 15,677.40, 21,635.36 and 8,870.96

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Solution

The fourth proportional to 15,677.40, 21,635.36 and 8,870.96 is: 12,242.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,677.40 : 21,635.36 = 8,870.96 : x
  2. Step 2: Convert to fraction form
    15,677.40/21,635.36 = 8,870.96/x
  3. Step 3: Cross multiply
    15,677.40x = 21,635.36 × 8,870.96
  4. Step 4: Simplify right side
    15,677.40x = 191,926,413.15
  5. Step 5: Solve for x
    x = 191,926,413.15/15,677.40
  6. Step 6: Final answer
    x = 12,242.23

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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.