Home / 38,659.36-53,457.30-30,687.76

Finding the Fourth Proportional to 38,659.36, 53,457.30 and 30,687.76

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Solution

The fourth proportional to 38,659.36, 53,457.30 and 30,687.76 is: 42,434.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,659.36 : 53,457.30 = 30,687.76 : x
  2. Step 2: Convert to fraction form
    38,659.36/53,457.30 = 30,687.76/x
  3. Step 3: Cross multiply
    38,659.36x = 53,457.30 × 30,687.76
  4. Step 4: Simplify right side
    38,659.36x = 1,640,484,792.65
  5. Step 5: Solve for x
    x = 1,640,484,792.65/38,659.36
  6. Step 6: Final answer
    x = 42,434.35

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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.