Home / 13,428,742,986.64-18,531,683,172.84-7,407,113,349.52

Finding the Fourth Proportional to 13,428,742,986.64, 18,531,683,172.84 and 7,407,113,349.52

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Solution

The fourth proportional to 13,428,742,986.64, 18,531,683,172.84 and 7,407,113,349.52 is: 10,221,826,268.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,428,742,986.64 : 18,531,683,172.84 = 7,407,113,349.52 : x
  2. Step 2: Convert to fraction form
    13,428,742,986.64/18,531,683,172.84 = 7,407,113,349.52/x
  3. Step 3: Cross multiply
    13,428,742,986.64x = 18,531,683,172.84 × 7,407,113,349.52
  4. Step 4: Simplify right side
    13,428,742,986.64x = 137,266,277,818,618,331,136
  5. Step 5: Solve for x
    x = 137,266,277,818,618,331,136/13,428,742,986.64
  6. Step 6: Final answer
    x = 10,221,826,268.86

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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.