Home / 20,646.16-28,486.79-12,148.65

Finding the Fourth Proportional to 20,646.16, 28,486.79 and 12,148.65

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Solution

The fourth proportional to 20,646.16, 28,486.79 and 12,148.65 is: 16,762.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,646.16 : 28,486.79 = 12,148.65 : x
  2. Step 2: Convert to fraction form
    20,646.16/28,486.79 = 12,148.65/x
  3. Step 3: Cross multiply
    20,646.16x = 28,486.79 × 12,148.65
  4. Step 4: Simplify right side
    20,646.16x = 346,076,026.15
  5. Step 5: Solve for x
    x = 346,076,026.15/20,646.16
  6. Step 6: Final answer
    x = 16,762.25

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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.