Home / 15,840.07-21,856.71-8,765.14

Finding the Fourth Proportional to 15,840.07, 21,856.71 and 8,765.14

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Solution

The fourth proportional to 15,840.07, 21,856.71 and 8,765.14 is: 12,094.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,840.07 : 21,856.71 = 8,765.14 : x
  2. Step 2: Convert to fraction form
    15,840.07/21,856.71 = 8,765.14/x
  3. Step 3: Cross multiply
    15,840.07x = 21,856.71 × 8,765.14
  4. Step 4: Simplify right side
    15,840.07x = 191,577,123.09
  5. Step 5: Solve for x
    x = 191,577,123.09/15,840.07
  6. Step 6: Final answer
    x = 12,094.46

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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.