Home / 30,155.52-45,239.84-12,616.32

Finding the Fourth Proportional to 30,155.52, 45,239.84 and 12,616.32

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Solution

The fourth proportional to 30,155.52, 45,239.84 and 12,616.32 is: 18,927.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,155.52 : 45,239.84 = 12,616.32 : x
  2. Step 2: Convert to fraction form
    30,155.52/45,239.84 = 12,616.32/x
  3. Step 3: Cross multiply
    30,155.52x = 45,239.84 × 12,616.32
  4. Step 4: Simplify right side
    30,155.52x = 570,760,298.19
  5. Step 5: Solve for x
    x = 570,760,298.19/30,155.52
  6. Step 6: Final answer
    x = 18,927.22

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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.