Home / 42,680.28-64,018.80-11,516.34

Finding the Fourth Proportional to 42,680.28, 64,018.80 and 11,516.34

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Solution

The fourth proportional to 42,680.28, 64,018.80 and 11,516.34 is: 17,274.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,680.28 : 64,018.80 = 11,516.34 : x
  2. Step 2: Convert to fraction form
    42,680.28/64,018.80 = 11,516.34/x
  3. Step 3: Cross multiply
    42,680.28x = 64,018.80 × 11,516.34
  4. Step 4: Simplify right side
    42,680.28x = 737,262,267.19
  5. Step 5: Solve for x
    x = 737,262,267.19/42,680.28
  6. Step 6: Final answer
    x = 17,274.07

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.