Home / 15,561.88-21,485.91-11,970.46

Finding the Fourth Proportional to 15,561.88, 21,485.91 and 11,970.46

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Solution

The fourth proportional to 15,561.88, 21,485.91 and 11,970.46 is: 16,527.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,561.88 : 21,485.91 = 11,970.46 : x
  2. Step 2: Convert to fraction form
    15,561.88/21,485.91 = 11,970.46/x
  3. Step 3: Cross multiply
    15,561.88x = 21,485.91 × 11,970.46
  4. Step 4: Simplify right side
    15,561.88x = 257,196,226.22
  5. Step 5: Solve for x
    x = 257,196,226.22/15,561.88
  6. Step 6: Final answer
    x = 16,527.32

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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.