Home / 12,668,417.88-17,471,128.71-9,878,232.75

Finding the Fourth Proportional to 12,668,417.88, 17,471,128.71 and 9,878,232.75

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Solution

The fourth proportional to 12,668,417.88, 17,471,128.71 and 9,878,232.75 is: 13,623,159.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,668,417.88 : 17,471,128.71 = 9,878,232.75 : x
  2. Step 2: Convert to fraction form
    12,668,417.88/17,471,128.71 = 9,878,232.75/x
  3. Step 3: Cross multiply
    12,668,417.88x = 17,471,128.71 × 9,878,232.75
  4. Step 4: Simplify right side
    12,668,417.88x = 172,583,875,802,587.25
  5. Step 5: Solve for x
    x = 172,583,875,802,587.25/12,668,417.88
  6. Step 6: Final answer
    x = 13,623,159.37

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Double scale
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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.