Home / 13,640,831.28-18,824,348.82-7,529,261.40

Finding the Fourth Proportional to 13,640,831.28, 18,824,348.82 and 7,529,261.40

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Solution

The fourth proportional to 13,640,831.28, 18,824,348.82 and 7,529,261.40 is: 10,390,381.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,640,831.28 : 18,824,348.82 = 7,529,261.40 : x
  2. Step 2: Convert to fraction form
    13,640,831.28/18,824,348.82 = 7,529,261.40/x
  3. Step 3: Cross multiply
    13,640,831.28x = 18,824,348.82 × 7,529,261.40
  4. Step 4: Simplify right side
    13,640,831.28x = 141,733,442,950,561.56
  5. Step 5: Solve for x
    x = 141,733,442,950,561.56/13,640,831.28
  6. Step 6: Final answer
    x = 10,390,381.64

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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.