Home / 13,368.16-18,447.70-7,400.08

Finding the Fourth Proportional to 13,368.16, 18,447.70 and 7,400.08

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Solution

The fourth proportional to 13,368.16, 18,447.70 and 7,400.08 is: 10,211.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,368.16 : 18,447.70 = 7,400.08 : x
  2. Step 2: Convert to fraction form
    13,368.16/18,447.70 = 7,400.08/x
  3. Step 3: Cross multiply
    13,368.16x = 18,447.70 × 7,400.08
  4. Step 4: Simplify right side
    13,368.16x = 136,514,455.82
  5. Step 5: Solve for x
    x = 136,514,455.82/13,368.16
  6. Step 6: Final answer
    x = 10,211.91

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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.