Home / 12,778,113.81-17,633,663.37-6,976,877.61

Finding the Fourth Proportional to 12,778,113.81, 17,633,663.37 and 6,976,877.61

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Solution

The fourth proportional to 12,778,113.81, 17,633,663.37 and 6,976,877.61 is: 9,628,018.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,778,113.81 : 17,633,663.37 = 6,976,877.61 : x
  2. Step 2: Convert to fraction form
    12,778,113.81/17,633,663.37 = 6,976,877.61/x
  3. Step 3: Cross multiply
    12,778,113.81x = 17,633,663.37 × 6,976,877.61
  4. Step 4: Simplify right side
    12,778,113.81x = 123,027,911,148,430.16
  5. Step 5: Solve for x
    x = 123,027,911,148,430.16/12,778,113.81
  6. Step 6: Final answer
    x = 9,628,018.11

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1.5x scale

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.