Home / 15,420.06-21,274.45-10,040.04

Finding the Fourth Proportional to 15,420.06, 21,274.45 and 10,040.04

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Solution

The fourth proportional to 15,420.06, 21,274.45 and 10,040.04 is: 13,851.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,420.06 : 21,274.45 = 10,040.04 : x
  2. Step 2: Convert to fraction form
    15,420.06/21,274.45 = 10,040.04/x
  3. Step 3: Cross multiply
    15,420.06x = 21,274.45 × 10,040.04
  4. Step 4: Simplify right side
    15,420.06x = 213,596,328.98
  5. Step 5: Solve for x
    x = 213,596,328.98/15,420.06
  6. Step 6: Final answer
    x = 13,851.85

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.