Home / 13,445.55-18,554.82-7,477.77

Finding the Fourth Proportional to 13,445.55, 18,554.82 and 7,477.77

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Solution

The fourth proportional to 13,445.55, 18,554.82 and 7,477.77 is: 10,319.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,445.55 : 18,554.82 = 7,477.77 : x
  2. Step 2: Convert to fraction form
    13,445.55/18,554.82 = 7,477.77/x
  3. Step 3: Cross multiply
    13,445.55x = 18,554.82 × 7,477.77
  4. Step 4: Simplify right side
    13,445.55x = 138,748,676.35
  5. Step 5: Solve for x
    x = 138,748,676.35/13,445.55
  6. Step 6: Final answer
    x = 10,319.30

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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.