Home / 15,438,788.16-21,291,580.80-9,638,103.84

Finding the Fourth Proportional to 15,438,788.16, 21,291,580.80 and 9,638,103.84

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Solution

The fourth proportional to 15,438,788.16, 21,291,580.80 and 9,638,103.84 is: 13,291,876.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,438,788.16 : 21,291,580.80 = 9,638,103.84 : x
  2. Step 2: Convert to fraction form
    15,438,788.16/21,291,580.80 = 9,638,103.84/x
  3. Step 3: Cross multiply
    15,438,788.16x = 21,291,580.80 × 9,638,103.84
  4. Step 4: Simplify right side
    15,438,788.16x = 205,210,466,668,150.28
  5. Step 5: Solve for x
    x = 205,210,466,668,150.28/15,438,788.16
  6. Step 6: Final answer
    x = 13,291,876.57

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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.