Home / 13,348.63-18,420.53-7,298.72

Finding the Fourth Proportional to 13,348.63, 18,420.53 and 7,298.72

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Solution

The fourth proportional to 13,348.63, 18,420.53 and 7,298.72 is: 10,071.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,348.63 : 18,420.53 = 7,298.72 : x
  2. Step 2: Convert to fraction form
    13,348.63/18,420.53 = 7,298.72/x
  3. Step 3: Cross multiply
    13,348.63x = 18,420.53 × 7,298.72
  4. Step 4: Simplify right side
    13,348.63x = 134,446,220.45
  5. Step 5: Solve for x
    x = 134,446,220.45/13,348.63
  6. Step 6: Final answer
    x = 10,071.91

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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.