Home / 19,419,315.40-29,128,973.10-15,640,179.40

Finding the Fourth Proportional to 19,419,315.40, 29,128,973.10 and 15,640,179.40

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Solution

The fourth proportional to 19,419,315.40, 29,128,973.10 and 15,640,179.40 is: 23,460,269.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,419,315.40 : 29,128,973.10 = 15,640,179.40 : x
  2. Step 2: Convert to fraction form
    19,419,315.40/29,128,973.10 = 15,640,179.40/x
  3. Step 3: Cross multiply
    19,419,315.40x = 29,128,973.10 × 15,640,179.40
  4. Step 4: Simplify right side
    19,419,315.40x = 455,582,365,021,774.19
  5. Step 5: Solve for x
    x = 455,582,365,021,774.19/19,419,315.40
  6. Step 6: Final answer
    x = 23,460,269.10

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.