Home / 13,390,185.60-18,478,238.40-7,278,768

Finding the Fourth Proportional to 13,390,185.60, 18,478,238.40 and 7,278,768

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Solution

The fourth proportional to 13,390,185.60, 18,478,238.40 and 7,278,768 is: 10,044,581.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,390,185.60 : 18,478,238.40 = 7,278,768 : x
  2. Step 2: Convert to fraction form
    13,390,185.60/18,478,238.40 = 7,278,768/x
  3. Step 3: Cross multiply
    13,390,185.60x = 18,478,238.40 × 7,278,768
  4. Step 4: Simplify right side
    13,390,185.60x = 134,498,810,362,291.19
  5. Step 5: Solve for x
    x = 134,498,810,362,291.19/13,390,185.60
  6. Step 6: Final answer
    x = 10,044,581.49

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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.