Home / 30,005.32-45,007.40-8,959.62

Finding the Fourth Proportional to 30,005.32, 45,007.40 and 8,959.62

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Solution

The fourth proportional to 30,005.32, 45,007.40 and 8,959.62 is: 13,439.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,005.32 : 45,007.40 = 8,959.62 : x
  2. Step 2: Convert to fraction form
    30,005.32/45,007.40 = 8,959.62/x
  3. Step 3: Cross multiply
    30,005.32x = 45,007.40 × 8,959.62
  4. Step 4: Simplify right side
    30,005.32x = 403,249,120.45
  5. Step 5: Solve for x
    x = 403,249,120.45/30,005.32
  6. Step 6: Final answer
    x = 13,439.26

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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.