Home / 15,215.10-20,985.26-13,094.21

Finding the Fourth Proportional to 15,215.10, 20,985.26 and 13,094.21

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Solution

The fourth proportional to 15,215.10, 20,985.26 and 13,094.21 is: 18,060.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,215.10 : 20,985.26 = 13,094.21 : x
  2. Step 2: Convert to fraction form
    15,215.10/20,985.26 = 13,094.21/x
  3. Step 3: Cross multiply
    15,215.10x = 20,985.26 × 13,094.21
  4. Step 4: Simplify right side
    15,215.10x = 274,785,388.34
  5. Step 5: Solve for x
    x = 274,785,388.34/15,215.10
  6. Step 6: Final answer
    x = 18,060.05

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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.