Home / 25,457.78-35,145.65-15,388.77

Finding the Fourth Proportional to 25,457.78, 35,145.65 and 15,388.77

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Solution

The fourth proportional to 25,457.78, 35,145.65 and 15,388.77 is: 21,244.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,457.78 : 35,145.65 = 15,388.77 : x
  2. Step 2: Convert to fraction form
    25,457.78/35,145.65 = 15,388.77/x
  3. Step 3: Cross multiply
    25,457.78x = 35,145.65 × 15,388.77
  4. Step 4: Simplify right side
    25,457.78x = 540,848,247.41
  5. Step 5: Solve for x
    x = 540,848,247.41/25,457.78
  6. Step 6: Final answer
    x = 21,244.91

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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.