Home / 10,090.90-13,925.40-5,615.08

Finding the Fourth Proportional to 10,090.90, 13,925.40 and 5,615.08

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Solution

The fourth proportional to 10,090.90, 13,925.40 and 5,615.08 is: 7,748.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,090.90 : 13,925.40 = 5,615.08 : x
  2. Step 2: Convert to fraction form
    10,090.90/13,925.40 = 5,615.08/x
  3. Step 3: Cross multiply
    10,090.90x = 13,925.40 × 5,615.08
  4. Step 4: Simplify right side
    10,090.90x = 78,192,235.03
  5. Step 5: Solve for x
    x = 78,192,235.03/10,090.90
  6. Step 6: Final answer
    x = 7,748.79

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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.