Home / 13,458.04-18,569.98-7,791.68

Finding the Fourth Proportional to 13,458.04, 18,569.98 and 7,791.68

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Solution

The fourth proportional to 13,458.04, 18,569.98 and 7,791.68 is: 10,751.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,458.04 : 18,569.98 = 7,791.68 : x
  2. Step 2: Convert to fraction form
    13,458.04/18,569.98 = 7,791.68/x
  3. Step 3: Cross multiply
    13,458.04x = 18,569.98 × 7,791.68
  4. Step 4: Simplify right side
    13,458.04x = 144,691,368.71
  5. Step 5: Solve for x
    x = 144,691,368.71/13,458.04
  6. Step 6: Final answer
    x = 10,751.30

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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.