Home / 14,720.16-20,307.84-9,413.76

Finding the Fourth Proportional to 14,720.16, 20,307.84 and 9,413.76

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Solution

The fourth proportional to 14,720.16, 20,307.84 and 9,413.76 is: 12,987.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,720.16 : 20,307.84 = 9,413.76 : x
  2. Step 2: Convert to fraction form
    14,720.16/20,307.84 = 9,413.76/x
  3. Step 3: Cross multiply
    14,720.16x = 20,307.84 × 9,413.76
  4. Step 4: Simplify right side
    14,720.16x = 191,173,131.88
  5. Step 5: Solve for x
    x = 191,173,131.88/14,720.16
  6. Step 6: Final answer
    x = 12,987.16

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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.