Home / 20,602.48-28,421.40-12,213.04

Finding the Fourth Proportional to 20,602.48, 28,421.40 and 12,213.04

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Solution

The fourth proportional to 20,602.48, 28,421.40 and 12,213.04 is: 16,848.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,602.48 : 28,421.40 = 12,213.04 : x
  2. Step 2: Convert to fraction form
    20,602.48/28,421.40 = 12,213.04/x
  3. Step 3: Cross multiply
    20,602.48x = 28,421.40 × 12,213.04
  4. Step 4: Simplify right side
    20,602.48x = 347,111,695.06
  5. Step 5: Solve for x
    x = 347,111,695.06/20,602.48
  6. Step 6: Final answer
    x = 16,848.05

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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.