Home / 42,712.02-64,071.27-11,547

Finding the Fourth Proportional to 42,712.02, 64,071.27 and 11,547

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Solution

The fourth proportional to 42,712.02, 64,071.27 and 11,547 is: 17,321.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,712.02 : 64,071.27 = 11,547 : x
  2. Step 2: Convert to fraction form
    42,712.02/64,071.27 = 11,547/x
  3. Step 3: Cross multiply
    42,712.02x = 64,071.27 × 11,547
  4. Step 4: Simplify right side
    42,712.02x = 739,830,954.69
  5. Step 5: Solve for x
    x = 739,830,954.69/42,712.02
  6. Step 6: Final answer
    x = 17,321.38

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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.