Home / 13,503.43-18,635.71-7,841.45

Finding the Fourth Proportional to 13,503.43, 18,635.71 and 7,841.45

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Solution

The fourth proportional to 13,503.43, 18,635.71 and 7,841.45 is: 10,821.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,503.43 : 18,635.71 = 7,841.45 : x
  2. Step 2: Convert to fraction form
    13,503.43/18,635.71 = 7,841.45/x
  3. Step 3: Cross multiply
    13,503.43x = 18,635.71 × 7,841.45
  4. Step 4: Simplify right side
    13,503.43x = 146,130,875.40
  5. Step 5: Solve for x
    x = 146,130,875.40/13,503.43
  6. Step 6: Final answer
    x = 10,821.76

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.