Home / 12,989,720.52-17,925,531.66-7,109,326.26

Finding the Fourth Proportional to 12,989,720.52, 17,925,531.66 and 7,109,326.26

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Solution

The fourth proportional to 12,989,720.52, 17,925,531.66 and 7,109,326.26 is: 9,810,715.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,989,720.52 : 17,925,531.66 = 7,109,326.26 : x
  2. Step 2: Convert to fraction form
    12,989,720.52/17,925,531.66 = 7,109,326.26/x
  3. Step 3: Cross multiply
    12,989,720.52x = 17,925,531.66 × 7,109,326.26
  4. Step 4: Simplify right side
    12,989,720.52x = 127,438,452,954,899.39
  5. Step 5: Solve for x
    x = 127,438,452,954,899.39/12,989,720.52
  6. Step 6: Final answer
    x = 9,810,715.54

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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.