Home / 25,980.12-35,864.55-15,223.50

Finding the Fourth Proportional to 25,980.12, 35,864.55 and 15,223.50

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Solution

The fourth proportional to 25,980.12, 35,864.55 and 15,223.50 is: 21,015.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,980.12 : 35,864.55 = 15,223.50 : x
  2. Step 2: Convert to fraction form
    25,980.12/35,864.55 = 15,223.50/x
  3. Step 3: Cross multiply
    25,980.12x = 35,864.55 × 15,223.50
  4. Step 4: Simplify right side
    25,980.12x = 545,983,976.93
  5. Step 5: Solve for x
    x = 545,983,976.93/25,980.12
  6. Step 6: Final answer
    x = 21,015.45

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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.