Home / 13,390,100.72-18,478,351.36-7,278,529.04

Finding the Fourth Proportional to 13,390,100.72, 18,478,351.36 and 7,278,529.04

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Solution

The fourth proportional to 13,390,100.72, 18,478,351.36 and 7,278,529.04 is: 10,044,376.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,390,100.72 : 18,478,351.36 = 7,278,529.04 : x
  2. Step 2: Convert to fraction form
    13,390,100.72/18,478,351.36 = 7,278,529.04/x
  3. Step 3: Cross multiply
    13,390,100.72x = 18,478,351.36 × 7,278,529.04
  4. Step 4: Simplify right side
    13,390,100.72x = 134,495,216,985,083.48
  5. Step 5: Solve for x
    x = 134,495,216,985,083.48/13,390,100.72
  6. Step 6: Final answer
    x = 10,044,376.80

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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.