Home / 20,416.08-28,170.54-12,347.40

Finding the Fourth Proportional to 20,416.08, 28,170.54 and 12,347.40

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Solution

The fourth proportional to 20,416.08, 28,170.54 and 12,347.40 is: 17,037.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,416.08 : 28,170.54 = 12,347.40 : x
  2. Step 2: Convert to fraction form
    20,416.08/28,170.54 = 12,347.40/x
  3. Step 3: Cross multiply
    20,416.08x = 28,170.54 × 12,347.40
  4. Step 4: Simplify right side
    20,416.08x = 347,832,925.60
  5. Step 5: Solve for x
    x = 347,832,925.60/20,416.08
  6. Step 6: Final answer
    x = 17,037.20

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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.