Home / 13,437.89-18,543.48-7,469.35

Finding the Fourth Proportional to 13,437.89, 18,543.48 and 7,469.35

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Solution

The fourth proportional to 13,437.89, 18,543.48 and 7,469.35 is: 10,307.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,437.89 : 18,543.48 = 7,469.35 : x
  2. Step 2: Convert to fraction form
    13,437.89/18,543.48 = 7,469.35/x
  3. Step 3: Cross multiply
    13,437.89x = 18,543.48 × 7,469.35
  4. Step 4: Simplify right side
    13,437.89x = 138,507,742.34
  5. Step 5: Solve for x
    x = 138,507,742.34/13,437.89
  6. Step 6: Final answer
    x = 10,307.25

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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.