Home / 13,319,717.76-18,381,209.28-7,208,146.56

Finding the Fourth Proportional to 13,319,717.76, 18,381,209.28 and 7,208,146.56

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Solution

The fourth proportional to 13,319,717.76, 18,381,209.28 and 7,208,146.56 is: 9,947,241.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,319,717.76 : 18,381,209.28 = 7,208,146.56 : x
  2. Step 2: Convert to fraction form
    13,319,717.76/18,381,209.28 = 7,208,146.56/x
  3. Step 3: Cross multiply
    13,319,717.76x = 18,381,209.28 × 7,208,146.56
  4. Step 4: Simplify right side
    13,319,717.76x = 132,494,450,440,272.08
  5. Step 5: Solve for x
    x = 132,494,450,440,272.08/13,319,717.76
  6. Step 6: Final answer
    x = 9,947,241.59

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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.