Home / 15,309.96-21,133.59-14,888.64

Finding the Fourth Proportional to 15,309.96, 21,133.59 and 14,888.64

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Solution

The fourth proportional to 15,309.96, 21,133.59 and 14,888.64 is: 20,552.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,309.96 : 21,133.59 = 14,888.64 : x
  2. Step 2: Convert to fraction form
    15,309.96/21,133.59 = 14,888.64/x
  3. Step 3: Cross multiply
    15,309.96x = 21,133.59 × 14,888.64
  4. Step 4: Simplify right side
    15,309.96x = 314,650,413.42
  5. Step 5: Solve for x
    x = 314,650,413.42/15,309.96
  6. Step 6: Final answer
    x = 20,552.01

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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.