Home / 30,005.28-45,011.52-10,287.36

Finding the Fourth Proportional to 30,005.28, 45,011.52 and 10,287.36

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Solution

The fourth proportional to 30,005.28, 45,011.52 and 10,287.36 is: 15,432.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,005.28 : 45,011.52 = 10,287.36 : x
  2. Step 2: Convert to fraction form
    30,005.28/45,011.52 = 10,287.36/x
  3. Step 3: Cross multiply
    30,005.28x = 45,011.52 × 10,287.36
  4. Step 4: Simplify right side
    30,005.28x = 463,049,710.39
  5. Step 5: Solve for x
    x = 463,049,710.39/30,005.28
  6. Step 6: Final answer
    x = 15,432.27

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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.