Home / 21,341.07-31,985.69-15,102.90

Finding the Fourth Proportional to 21,341.07, 31,985.69 and 15,102.90

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Solution

The fourth proportional to 21,341.07, 31,985.69 and 15,102.90 is: 22,636.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,341.07 : 31,985.69 = 15,102.90 : x
  2. Step 2: Convert to fraction form
    21,341.07/31,985.69 = 15,102.90/x
  3. Step 3: Cross multiply
    21,341.07x = 31,985.69 × 15,102.90
  4. Step 4: Simplify right side
    21,341.07x = 483,076,601.99
  5. Step 5: Solve for x
    x = 483,076,601.99/21,341.07
  6. Step 6: Final answer
    x = 22,636.01

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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.