Home / 12,551.90-18,824.70-5,158.40

Finding the Fourth Proportional to 12,551.90, 18,824.70 and 5,158.40

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Solution

The fourth proportional to 12,551.90, 18,824.70 and 5,158.40 is: 7,736.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,551.90 : 18,824.70 = 5,158.40 : x
  2. Step 2: Convert to fraction form
    12,551.90/18,824.70 = 5,158.40/x
  3. Step 3: Cross multiply
    12,551.90x = 18,824.70 × 5,158.40
  4. Step 4: Simplify right side
    12,551.90x = 97,105,332.48
  5. Step 5: Solve for x
    x = 97,105,332.48/12,551.90
  6. Step 6: Final answer
    x = 7,736.31

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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.