Home / 39,064.12-53,908.44-21,159.20

Finding the Fourth Proportional to 39,064.12, 53,908.44 and 21,159.20

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Solution

The fourth proportional to 39,064.12, 53,908.44 and 21,159.20 is: 29,199.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,064.12 : 53,908.44 = 21,159.20 : x
  2. Step 2: Convert to fraction form
    39,064.12/53,908.44 = 21,159.20/x
  3. Step 3: Cross multiply
    39,064.12x = 53,908.44 × 21,159.20
  4. Step 4: Simplify right side
    39,064.12x = 1,140,659,463.65
  5. Step 5: Solve for x
    x = 1,140,659,463.65/39,064.12
  6. Step 6: Final answer
    x = 29,199.67

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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.