Home / 15,316.64-21,131.58-10,014.56

Finding the Fourth Proportional to 15,316.64, 21,131.58 and 10,014.56

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Solution

The fourth proportional to 15,316.64, 21,131.58 and 10,014.56 is: 13,816.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,316.64 : 21,131.58 = 10,014.56 : x
  2. Step 2: Convert to fraction form
    15,316.64/21,131.58 = 10,014.56/x
  3. Step 3: Cross multiply
    15,316.64x = 21,131.58 × 10,014.56
  4. Step 4: Simplify right side
    15,316.64x = 211,623,475.80
  5. Step 5: Solve for x
    x = 211,623,475.80/15,316.64
  6. Step 6: Final answer
    x = 13,816.57

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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.