Home / 30,009.12-45,015.87-10,287.51

Finding the Fourth Proportional to 30,009.12, 45,015.87 and 10,287.51

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Solution

The fourth proportional to 30,009.12, 45,015.87 and 10,287.51 is: 15,432.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,009.12 : 45,015.87 = 10,287.51 : x
  2. Step 2: Convert to fraction form
    30,009.12/45,015.87 = 10,287.51/x
  3. Step 3: Cross multiply
    30,009.12x = 45,015.87 × 10,287.51
  4. Step 4: Simplify right side
    30,009.12x = 463,101,212.78
  5. Step 5: Solve for x
    x = 463,101,212.78/30,009.12
  6. Step 6: Final answer
    x = 15,432.02

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.