Home / 20,030.61-27,612.77-15,768.01

Finding the Fourth Proportional to 20,030.61, 27,612.77 and 15,768.01

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Solution

The fourth proportional to 20,030.61, 27,612.77 and 15,768.01 is: 21,736.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,030.61 : 27,612.77 = 15,768.01 : x
  2. Step 2: Convert to fraction form
    20,030.61/27,612.77 = 15,768.01/x
  3. Step 3: Cross multiply
    20,030.61x = 27,612.77 × 15,768.01
  4. Step 4: Simplify right side
    20,030.61x = 435,398,354.65
  5. Step 5: Solve for x
    x = 435,398,354.65/20,030.61
  6. Step 6: Final answer
    x = 21,736.66

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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.