Home / 13,312.75-18,365.58-7,646.09

Finding the Fourth Proportional to 13,312.75, 18,365.58 and 7,646.09

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Solution

The fourth proportional to 13,312.75, 18,365.58 and 7,646.09 is: 10,548.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,312.75 : 18,365.58 = 7,646.09 : x
  2. Step 2: Convert to fraction form
    13,312.75/18,365.58 = 7,646.09/x
  3. Step 3: Cross multiply
    13,312.75x = 18,365.58 × 7,646.09
  4. Step 4: Simplify right side
    13,312.75x = 140,424,877.58
  5. Step 5: Solve for x
    x = 140,424,877.58/13,312.75
  6. Step 6: Final answer
    x = 10,548.15

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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.