Home / 20,642.04-28,486-11,210.60

Finding the Fourth Proportional to 20,642.04, 28,486 and 11,210.60

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Solution

The fourth proportional to 20,642.04, 28,486 and 11,210.60 is: 15,470.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,642.04 : 28,486 = 11,210.60 : x
  2. Step 2: Convert to fraction form
    20,642.04/28,486 = 11,210.60/x
  3. Step 3: Cross multiply
    20,642.04x = 28,486 × 11,210.60
  4. Step 4: Simplify right side
    20,642.04x = 319,345,151.60
  5. Step 5: Solve for x
    x = 319,345,151.60/20,642.04
  6. Step 6: Final answer
    x = 15,470.62

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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.