Home / 30,004.71-45,007.47-28,178.16

Finding the Fourth Proportional to 30,004.71, 45,007.47 and 28,178.16

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Solution

The fourth proportional to 30,004.71, 45,007.47 and 28,178.16 is: 42,267.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,004.71 : 45,007.47 = 28,178.16 : x
  2. Step 2: Convert to fraction form
    30,004.71/45,007.47 = 28,178.16/x
  3. Step 3: Cross multiply
    30,004.71x = 45,007.47 × 28,178.16
  4. Step 4: Simplify right side
    30,004.71x = 1,268,227,690.86
  5. Step 5: Solve for x
    x = 1,268,227,690.86/30,004.71
  6. Step 6: Final answer
    x = 42,267.62

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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.