Home / 13,808.48-19,055.40-7,840.04

Finding the Fourth Proportional to 13,808.48, 19,055.40 and 7,840.04

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Solution

The fourth proportional to 13,808.48, 19,055.40 and 7,840.04 is: 10,819.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,808.48 : 19,055.40 = 7,840.04 : x
  2. Step 2: Convert to fraction form
    13,808.48/19,055.40 = 7,840.04/x
  3. Step 3: Cross multiply
    13,808.48x = 19,055.40 × 7,840.04
  4. Step 4: Simplify right side
    13,808.48x = 149,395,098.22
  5. Step 5: Solve for x
    x = 149,395,098.22/13,808.48
  6. Step 6: Final answer
    x = 10,819.08

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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.