Home / 30,231.46-45,356.28-12,210.40

Finding the Fourth Proportional to 30,231.46, 45,356.28 and 12,210.40

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Solution

The fourth proportional to 30,231.46, 45,356.28 and 12,210.40 is: 18,319.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,231.46 : 45,356.28 = 12,210.40 : x
  2. Step 2: Convert to fraction form
    30,231.46/45,356.28 = 12,210.40/x
  3. Step 3: Cross multiply
    30,231.46x = 45,356.28 × 12,210.40
  4. Step 4: Simplify right side
    30,231.46x = 553,818,321.31
  5. Step 5: Solve for x
    x = 553,818,321.31/30,231.46
  6. Step 6: Final answer
    x = 18,319.27

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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.