Home / 42,975.36-64,460.16-11,808

Finding the Fourth Proportional to 42,975.36, 64,460.16 and 11,808

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Solution

The fourth proportional to 42,975.36, 64,460.16 and 11,808 is: 17,711.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,975.36 : 64,460.16 = 11,808 : x
  2. Step 2: Convert to fraction form
    42,975.36/64,460.16 = 11,808/x
  3. Step 3: Cross multiply
    42,975.36x = 64,460.16 × 11,808
  4. Step 4: Simplify right side
    42,975.36x = 761,145,569.28
  5. Step 5: Solve for x
    x = 761,145,569.28/42,975.36
  6. Step 6: Final answer
    x = 17,711.21

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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.