Home / 15,085.64-20,820.58-14,421.18

Finding the Fourth Proportional to 15,085.64, 20,820.58 and 14,421.18

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Solution

The fourth proportional to 15,085.64, 20,820.58 and 14,421.18 is: 19,903.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,085.64 : 20,820.58 = 14,421.18 : x
  2. Step 2: Convert to fraction form
    15,085.64/20,820.58 = 14,421.18/x
  3. Step 3: Cross multiply
    15,085.64x = 20,820.58 × 14,421.18
  4. Step 4: Simplify right side
    15,085.64x = 300,257,331.88
  5. Step 5: Solve for x
    x = 300,257,331.88/15,085.64
  6. Step 6: Final answer
    x = 19,903.52

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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.