Home / 30,528.40-45,792.60-18,864.40

Finding the Fourth Proportional to 30,528.40, 45,792.60 and 18,864.40

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Solution

The fourth proportional to 30,528.40, 45,792.60 and 18,864.40 is: 28,296.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,528.40 : 45,792.60 = 18,864.40 : x
  2. Step 2: Convert to fraction form
    30,528.40/45,792.60 = 18,864.40/x
  3. Step 3: Cross multiply
    30,528.40x = 45,792.60 × 18,864.40
  4. Step 4: Simplify right side
    30,528.40x = 863,849,923.44
  5. Step 5: Solve for x
    x = 863,849,923.44/30,528.40
  6. Step 6: Final answer
    x = 28,296.60

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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.