Home / 13,299,128.98-18,353,123.08-7,418,721.34

Finding the Fourth Proportional to 13,299,128.98, 18,353,123.08 and 7,418,721.34

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Solution

The fourth proportional to 13,299,128.98, 18,353,123.08 and 7,418,721.34 is: 10,238,016.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,299,128.98 : 18,353,123.08 = 7,418,721.34 : x
  2. Step 2: Convert to fraction form
    13,299,128.98/18,353,123.08 = 7,418,721.34/x
  3. Step 3: Cross multiply
    13,299,128.98x = 18,353,123.08 × 7,418,721.34
  4. Step 4: Simplify right side
    13,299,128.98x = 136,156,705,849,242.52
  5. Step 5: Solve for x
    x = 136,156,705,849,242.52/13,299,128.98
  6. Step 6: Final answer
    x = 10,238,016.79

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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.