Home / 25,388.81-35,040.42-15,830.25

Finding the Fourth Proportional to 25,388.81, 35,040.42 and 15,830.25

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Solution

The fourth proportional to 25,388.81, 35,040.42 and 15,830.25 is: 21,848.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,388.81 : 35,040.42 = 15,830.25 : x
  2. Step 2: Convert to fraction form
    25,388.81/35,040.42 = 15,830.25/x
  3. Step 3: Cross multiply
    25,388.81x = 35,040.42 × 15,830.25
  4. Step 4: Simplify right side
    25,388.81x = 554,698,608.71
  5. Step 5: Solve for x
    x = 554,698,608.71/25,388.81
  6. Step 6: Final answer
    x = 21,848.16

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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.