Home / 12,688,320-17,507,623.68-7,181,667.84

Finding the Fourth Proportional to 12,688,320, 17,507,623.68 and 7,181,667.84

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Solution

The fourth proportional to 12,688,320, 17,507,623.68 and 7,181,667.84 is: 9,909,423.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,688,320 : 17,507,623.68 = 7,181,667.84 : x
  2. Step 2: Convert to fraction form
    12,688,320/17,507,623.68 = 7,181,667.84/x
  3. Step 3: Cross multiply
    12,688,320x = 17,507,623.68 × 7,181,667.84
  4. Step 4: Simplify right side
    12,688,320x = 125,733,937,937,478.45
  5. Step 5: Solve for x
    x = 125,733,937,937,478.45/12,688,320
  6. Step 6: Final answer
    x = 9,909,423.62

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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.