Home / 12,878,416.80-17,771,853.60-7,077,196.80

Finding the Fourth Proportional to 12,878,416.80, 17,771,853.60 and 7,077,196.80

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Solution

The fourth proportional to 12,878,416.80, 17,771,853.60 and 7,077,196.80 is: 9,766,332.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,878,416.80 : 17,771,853.60 = 7,077,196.80 : x
  2. Step 2: Convert to fraction form
    12,878,416.80/17,771,853.60 = 7,077,196.80/x
  3. Step 3: Cross multiply
    12,878,416.80x = 17,771,853.60 × 7,077,196.80
  4. Step 4: Simplify right side
    12,878,416.80x = 125,774,905,427,988.48
  5. Step 5: Solve for x
    x = 125,774,905,427,988.48/12,878,416.80
  6. Step 6: Final answer
    x = 9,766,332.88

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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.