Home / 12,988,784.16-17,912,678.04-11,152,666.44

Finding the Fourth Proportional to 12,988,784.16, 17,912,678.04 and 11,152,666.44

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Solution

The fourth proportional to 12,988,784.16, 17,912,678.04 and 11,152,666.44 is: 15,380,509.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,988,784.16 : 17,912,678.04 = 11,152,666.44 : x
  2. Step 2: Convert to fraction form
    12,988,784.16/17,912,678.04 = 11,152,666.44/x
  3. Step 3: Cross multiply
    12,988,784.16x = 17,912,678.04 × 11,152,666.44
  4. Step 4: Simplify right side
    12,988,784.16x = 199,774,123,227,232.97
  5. Step 5: Solve for x
    x = 199,774,123,227,232.97/12,988,784.16
  6. Step 6: Final answer
    x = 15,380,509.89

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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.