Home / 15,826.88-21,840.96-9,538.08

Finding the Fourth Proportional to 15,826.88, 21,840.96 and 9,538.08

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Solution

The fourth proportional to 15,826.88, 21,840.96 and 9,538.08 is: 13,162.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,826.88 : 21,840.96 = 9,538.08 : x
  2. Step 2: Convert to fraction form
    15,826.88/21,840.96 = 9,538.08/x
  3. Step 3: Cross multiply
    15,826.88x = 21,840.96 × 9,538.08
  4. Step 4: Simplify right side
    15,826.88x = 208,320,823.76
  5. Step 5: Solve for x
    x = 208,320,823.76/15,826.88
  6. Step 6: Final answer
    x = 13,162.47

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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.