Home / 12,878,957.07-17,772,590.30-7,077,731.81

Finding the Fourth Proportional to 12,878,957.07, 17,772,590.30 and 7,077,731.81

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Solution

The fourth proportional to 12,878,957.07, 17,772,590.30 and 7,077,731.81 is: 9,767,066.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,878,957.07 : 17,772,590.30 = 7,077,731.81 : x
  2. Step 2: Convert to fraction form
    12,878,957.07/17,772,590.30 = 7,077,731.81/x
  3. Step 3: Cross multiply
    12,878,957.07x = 17,772,590.30 × 7,077,731.81
  4. Step 4: Simplify right side
    12,878,957.07x = 125,789,627,588,155.84
  5. Step 5: Solve for x
    x = 125,789,627,588,155.84/12,878,957.07
  6. Step 6: Final answer
    x = 9,767,066.30

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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.