Home / 13,518,742.16-18,656,611.26-7,719,386.78

Finding the Fourth Proportional to 13,518,742.16, 18,656,611.26 and 7,719,386.78

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Solution

The fourth proportional to 13,518,742.16, 18,656,611.26 and 7,719,386.78 is: 10,653,180.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,518,742.16 : 18,656,611.26 = 7,719,386.78 : x
  2. Step 2: Convert to fraction form
    13,518,742.16/18,656,611.26 = 7,719,386.78/x
  3. Step 3: Cross multiply
    13,518,742.16x = 18,656,611.26 × 7,719,386.78
  4. Step 4: Simplify right side
    13,518,742.16x = 144,017,598,320,043.16
  5. Step 5: Solve for x
    x = 144,017,598,320,043.16/13,518,742.16
  6. Step 6: Final answer
    x = 10,653,180.35

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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.