Home / 31,610.02-47,511-21,117.28

Finding the Fourth Proportional to 31,610.02, 47,511 and 21,117.28

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Solution

The fourth proportional to 31,610.02, 47,511 and 21,117.28 is: 31,740.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,610.02 : 47,511 = 21,117.28 : x
  2. Step 2: Convert to fraction form
    31,610.02/47,511 = 21,117.28/x
  3. Step 3: Cross multiply
    31,610.02x = 47,511 × 21,117.28
  4. Step 4: Simplify right side
    31,610.02x = 1,003,303,090.08
  5. Step 5: Solve for x
    x = 1,003,303,090.08/31,610.02
  6. Step 6: Final answer
    x = 31,740.03

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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.