Home / 21,243,165.81-31,864,643.56-18,355,746.07

Finding the Fourth Proportional to 21,243,165.81, 31,864,643.56 and 18,355,746.07

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Solution

The fourth proportional to 21,243,165.81, 31,864,643.56 and 18,355,746.07 is: 27,533,528.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,243,165.81 : 31,864,643.56 = 18,355,746.07 : x
  2. Step 2: Convert to fraction form
    21,243,165.81/31,864,643.56 = 18,355,746.07/x
  3. Step 3: Cross multiply
    21,243,165.81x = 31,864,643.56 × 18,355,746.07
  4. Step 4: Simplify right side
    21,243,165.81x = 584,899,305,798,420.75
  5. Step 5: Solve for x
    x = 584,899,305,798,420.75/21,243,165.81
  6. Step 6: Final answer
    x = 27,533,528.24

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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.