Home / 13,287.78-19,931.58-7,368.30

Finding the Fourth Proportional to 13,287.78, 19,931.58 and 7,368.30

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Solution

The fourth proportional to 13,287.78, 19,931.58 and 7,368.30 is: 11,052.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,287.78 : 19,931.58 = 7,368.30 : x
  2. Step 2: Convert to fraction form
    13,287.78/19,931.58 = 7,368.30/x
  3. Step 3: Cross multiply
    13,287.78x = 19,931.58 × 7,368.30
  4. Step 4: Simplify right side
    13,287.78x = 146,861,860.91
  5. Step 5: Solve for x
    x = 146,861,860.91/13,287.78
  6. Step 6: Final answer
    x = 11,052.40

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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.