Home / 28,413.34-39,210.68-15,666.98

Finding the Fourth Proportional to 28,413.34, 39,210.68 and 15,666.98

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Solution

The fourth proportional to 28,413.34, 39,210.68 and 15,666.98 is: 21,620.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,413.34 : 39,210.68 = 15,666.98 : x
  2. Step 2: Convert to fraction form
    28,413.34/39,210.68 = 15,666.98/x
  3. Step 3: Cross multiply
    28,413.34x = 39,210.68 × 15,666.98
  4. Step 4: Simplify right side
    28,413.34x = 614,312,939.35
  5. Step 5: Solve for x
    x = 614,312,939.35/28,413.34
  6. Step 6: Final answer
    x = 21,620.58

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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.