Home / 12,988,877.76-17,924,383.08-7,187,655.60

Finding the Fourth Proportional to 12,988,877.76, 17,924,383.08 and 7,187,655.60

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Solution

The fourth proportional to 12,988,877.76, 17,924,383.08 and 7,187,655.60 is: 9,918,816.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,988,877.76 : 17,924,383.08 = 7,187,655.60 : x
  2. Step 2: Convert to fraction form
    12,988,877.76/17,924,383.08 = 7,187,655.60/x
  3. Step 3: Cross multiply
    12,988,877.76x = 17,924,383.08 × 7,187,655.60
  4. Step 4: Simplify right side
    12,988,877.76x = 128,834,292,421,507.23
  5. Step 5: Solve for x
    x = 128,834,292,421,507.23/12,988,877.76
  6. Step 6: Final answer
    x = 9,918,816.30

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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.