Home / 12,259,128.40-16,917,597.12-7,105,479.28

Finding the Fourth Proportional to 12,259,128.40, 16,917,597.12 and 7,105,479.28

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Solution

The fourth proportional to 12,259,128.40, 16,917,597.12 and 7,105,479.28 is: 9,805,561.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,259,128.40 : 16,917,597.12 = 7,105,479.28 : x
  2. Step 2: Convert to fraction form
    12,259,128.40/16,917,597.12 = 7,105,479.28/x
  3. Step 3: Cross multiply
    12,259,128.40x = 16,917,597.12 × 7,105,479.28
  4. Step 4: Simplify right side
    12,259,128.40x = 120,207,635,803,547.69
  5. Step 5: Solve for x
    x = 120,207,635,803,547.69/12,259,128.40
  6. Step 6: Final answer
    x = 9,805,561.36

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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.