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Finding the Fourth Proportional to 18,354,689.53, 27,507,232.96 and 6,988,938.01

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Solution

The fourth proportional to 18,354,689.53, 27,507,232.96 and 6,988,938.01 is: 10,473,963.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,354,689.53 : 27,507,232.96 = 6,988,938.01 : x
  2. Step 2: Convert to fraction form
    18,354,689.53/27,507,232.96 = 6,988,938.01/x
  3. Step 3: Cross multiply
    18,354,689.53x = 27,507,232.96 × 6,988,938.01
  4. Step 4: Simplify right side
    18,354,689.53x = 192,246,345,984,068.81
  5. Step 5: Solve for x
    x = 192,246,345,984,068.81/18,354,689.53
  6. Step 6: Final answer
    x = 10,473,963.38

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.