Home / 15,715.63-21,688.50-9,003.34

Finding the Fourth Proportional to 15,715.63, 21,688.50 and 9,003.34

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Solution

The fourth proportional to 15,715.63, 21,688.50 and 9,003.34 is: 12,425.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,715.63 : 21,688.50 = 9,003.34 : x
  2. Step 2: Convert to fraction form
    15,715.63/21,688.50 = 9,003.34/x
  3. Step 3: Cross multiply
    15,715.63x = 21,688.50 × 9,003.34
  4. Step 4: Simplify right side
    15,715.63x = 195,268,939.59
  5. Step 5: Solve for x
    x = 195,268,939.59/15,715.63
  6. Step 6: Final answer
    x = 12,425.14

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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.