Home / 13,563.79-18,717.35-7,513.70

Finding the Fourth Proportional to 13,563.79, 18,717.35 and 7,513.70

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Solution

The fourth proportional to 13,563.79, 18,717.35 and 7,513.70 is: 10,368.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,563.79 : 18,717.35 = 7,513.70 : x
  2. Step 2: Convert to fraction form
    13,563.79/18,717.35 = 7,513.70/x
  3. Step 3: Cross multiply
    13,563.79x = 18,717.35 × 7,513.70
  4. Step 4: Simplify right side
    13,563.79x = 140,636,421.54
  5. Step 5: Solve for x
    x = 140,636,421.54/13,563.79
  6. Step 6: Final answer
    x = 10,368.52

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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.