Home / 12,976,208.64-17,905,605.12-7,174,206.72

Finding the Fourth Proportional to 12,976,208.64, 17,905,605.12 and 7,174,206.72

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Solution

The fourth proportional to 12,976,208.64, 17,905,605.12 and 7,174,206.72 is: 9,899,541.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,976,208.64 : 17,905,605.12 = 7,174,206.72 : x
  2. Step 2: Convert to fraction form
    12,976,208.64/17,905,605.12 = 7,174,206.72/x
  3. Step 3: Cross multiply
    12,976,208.64x = 17,905,605.12 × 7,174,206.72
  4. Step 4: Simplify right side
    12,976,208.64x = 128,458,512,577,570.41
  5. Step 5: Solve for x
    x = 128,458,512,577,570.41/12,976,208.64
  6. Step 6: Final answer
    x = 9,899,541.24

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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.