Home / 15,858,918-21,885,326.28-8,615,574

Finding the Fourth Proportional to 15,858,918, 21,885,326.28 and 8,615,574

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Solution

The fourth proportional to 15,858,918, 21,885,326.28 and 8,615,574 is: 11,889,502.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,858,918 : 21,885,326.28 = 8,615,574 : x
  2. Step 2: Convert to fraction form
    15,858,918/21,885,326.28 = 8,615,574/x
  3. Step 3: Cross multiply
    15,858,918x = 21,885,326.28 × 8,615,574
  4. Step 4: Simplify right side
    15,858,918x = 188,554,648,079,484.72
  5. Step 5: Solve for x
    x = 188,554,648,079,484.72/15,858,918
  6. Step 6: Final answer
    x = 11,889,502.68

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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.