Home / 12,686,921.61-17,507,969.16-6,885,703.44

Finding the Fourth Proportional to 12,686,921.61, 17,507,969.16 and 6,885,703.44

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Solution

The fourth proportional to 12,686,921.61, 17,507,969.16 and 6,885,703.44 is: 9,502,280.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,686,921.61 : 17,507,969.16 = 6,885,703.44 : x
  2. Step 2: Convert to fraction form
    12,686,921.61/17,507,969.16 = 6,885,703.44/x
  3. Step 3: Cross multiply
    12,686,921.61x = 17,507,969.16 × 6,885,703.44
  4. Step 4: Simplify right side
    12,686,921.61x = 120,554,683,472,425.92
  5. Step 5: Solve for x
    x = 120,554,683,472,425.92/12,686,921.61
  6. Step 6: Final answer
    x = 9,502,280.16

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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.