Home / 38,665.32-53,358.12-21,898.32

Finding the Fourth Proportional to 38,665.32, 53,358.12 and 21,898.32

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Solution

The fourth proportional to 38,665.32, 53,358.12 and 21,898.32 is: 30,219.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,665.32 : 53,358.12 = 21,898.32 : x
  2. Step 2: Convert to fraction form
    38,665.32/53,358.12 = 21,898.32/x
  3. Step 3: Cross multiply
    38,665.32x = 53,358.12 × 21,898.32
  4. Step 4: Simplify right side
    38,665.32x = 1,168,453,186.36
  5. Step 5: Solve for x
    x = 1,168,453,186.36/38,665.32
  6. Step 6: Final answer
    x = 30,219.67

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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.