Home / 15,860.64-21,887.84-10,281.44

Finding the Fourth Proportional to 15,860.64, 21,887.84 and 10,281.44

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Solution

The fourth proportional to 15,860.64, 21,887.84 and 10,281.44 is: 14,188.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,860.64 : 21,887.84 = 10,281.44 : x
  2. Step 2: Convert to fraction form
    15,860.64/21,887.84 = 10,281.44/x
  3. Step 3: Cross multiply
    15,860.64x = 21,887.84 × 10,281.44
  4. Step 4: Simplify right side
    15,860.64x = 225,038,513.69
  5. Step 5: Solve for x
    x = 225,038,513.69/15,860.64
  6. Step 6: Final answer
    x = 14,188.49

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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.