Home / 30,228.04-45,295.88-12,688.32

Finding the Fourth Proportional to 30,228.04, 45,295.88 and 12,688.32

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Solution

The fourth proportional to 30,228.04, 45,295.88 and 12,688.32 is: 19,013.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,228.04 : 45,295.88 = 12,688.32 : x
  2. Step 2: Convert to fraction form
    30,228.04/45,295.88 = 12,688.32/x
  3. Step 3: Cross multiply
    30,228.04x = 45,295.88 × 12,688.32
  4. Step 4: Simplify right side
    30,228.04x = 574,728,620.12
  5. Step 5: Solve for x
    x = 574,728,620.12/30,228.04
  6. Step 6: Final answer
    x = 19,013.10

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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.