Home / 30,015.06-45,011.79-10,288.32

Finding the Fourth Proportional to 30,015.06, 45,011.79 and 10,288.32

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Solution

The fourth proportional to 30,015.06, 45,011.79 and 10,288.32 is: 15,428.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,015.06 : 45,011.79 = 10,288.32 : x
  2. Step 2: Convert to fraction form
    30,015.06/45,011.79 = 10,288.32/x
  3. Step 3: Cross multiply
    30,015.06x = 45,011.79 × 10,288.32
  4. Step 4: Simplify right side
    30,015.06x = 463,095,699.29
  5. Step 5: Solve for x
    x = 463,095,699.29/30,015.06
  6. Step 6: Final answer
    x = 15,428.78

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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.