Home / 15,298,121-21,130,364.90-11,105,113.75

Finding the Fourth Proportional to 15,298,121, 21,130,364.90 and 11,105,113.75

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Solution

The fourth proportional to 15,298,121, 21,130,364.90 and 11,105,113.75 is: 15,338,818.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,298,121 : 21,130,364.90 = 11,105,113.75 : x
  2. Step 2: Convert to fraction form
    15,298,121/21,130,364.90 = 11,105,113.75/x
  3. Step 3: Cross multiply
    15,298,121x = 21,130,364.90 × 11,105,113.75
  4. Step 4: Simplify right side
    15,298,121x = 234,655,105,793,507.34
  5. Step 5: Solve for x
    x = 234,655,105,793,507.34/15,298,121
  6. Step 6: Final answer
    x = 15,338,818.79

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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.