Home / 13,742,153.12-18,959,918.64-7,938,817.40

Finding the Fourth Proportional to 13,742,153.12, 18,959,918.64 and 7,938,817.40

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Solution

The fourth proportional to 13,742,153.12, 18,959,918.64 and 7,938,817.40 is: 10,953,111.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,742,153.12 : 18,959,918.64 = 7,938,817.40 : x
  2. Step 2: Convert to fraction form
    13,742,153.12/18,959,918.64 = 7,938,817.40/x
  3. Step 3: Cross multiply
    13,742,153.12x = 18,959,918.64 × 7,938,817.40
  4. Step 4: Simplify right side
    13,742,153.12x = 150,519,332,001,816.34
  5. Step 5: Solve for x
    x = 150,519,332,001,816.34/13,742,153.12
  6. Step 6: Final answer
    x = 10,953,111.25

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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.