Home / 12,390,815.07-17,101,784.88-7,917,510.69

Finding the Fourth Proportional to 12,390,815.07, 17,101,784.88 and 7,917,510.69

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Solution

The fourth proportional to 12,390,815.07, 17,101,784.88 and 7,917,510.69 is: 10,927,736.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,390,815.07 : 17,101,784.88 = 7,917,510.69 : x
  2. Step 2: Convert to fraction form
    12,390,815.07/17,101,784.88 = 7,917,510.69/x
  3. Step 3: Cross multiply
    12,390,815.07x = 17,101,784.88 × 7,917,510.69
  4. Step 4: Simplify right side
    12,390,815.07x = 135,403,564,605,480.36
  5. Step 5: Solve for x
    x = 135,403,564,605,480.36/12,390,815.07
  6. Step 6: Final answer
    x = 10,927,736.70

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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.