Home / 13,291.68-18,341.95-7,622.49

Finding the Fourth Proportional to 13,291.68, 18,341.95 and 7,622.49

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Solution

The fourth proportional to 13,291.68, 18,341.95 and 7,622.49 is: 10,518.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,291.68 : 18,341.95 = 7,622.49 : x
  2. Step 2: Convert to fraction form
    13,291.68/18,341.95 = 7,622.49/x
  3. Step 3: Cross multiply
    13,291.68x = 18,341.95 × 7,622.49
  4. Step 4: Simplify right side
    13,291.68x = 139,811,330.46
  5. Step 5: Solve for x
    x = 139,811,330.46/13,291.68
  6. Step 6: Final answer
    x = 10,518.71

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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.