Home / 12,784,345.47-17,638,020.45-7,276,340.81

Finding the Fourth Proportional to 12,784,345.47, 17,638,020.45 and 7,276,340.81

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Solution

The fourth proportional to 12,784,345.47, 17,638,020.45 and 7,276,340.81 is: 10,038,859.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,784,345.47 : 17,638,020.45 = 7,276,340.81 : x
  2. Step 2: Convert to fraction form
    12,784,345.47/17,638,020.45 = 7,276,340.81/x
  3. Step 3: Cross multiply
    12,784,345.47x = 17,638,020.45 × 7,276,340.81
  4. Step 4: Simplify right side
    12,784,345.47x = 128,340,247,919,759.45
  5. Step 5: Solve for x
    x = 128,340,247,919,759.45/12,784,345.47
  6. Step 6: Final answer
    x = 10,038,859.50

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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.