Home / 20,665,496.16-28,522,332-13,683,866.40

Finding the Fourth Proportional to 20,665,496.16, 28,522,332 and 13,683,866.40

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Solution

The fourth proportional to 20,665,496.16, 28,522,332 and 13,683,866.40 is: 18,886,349.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,665,496.16 : 28,522,332 = 13,683,866.40 : x
  2. Step 2: Convert to fraction form
    20,665,496.16/28,522,332 = 13,683,866.40/x
  3. Step 3: Cross multiply
    20,665,496.16x = 28,522,332 × 13,683,866.40
  4. Step 4: Simplify right side
    20,665,496.16x = 390,295,780,504,444.81
  5. Step 5: Solve for x
    x = 390,295,780,504,444.81/20,665,496.16
  6. Step 6: Final answer
    x = 18,886,349.38

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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.