Home / 20,875.88-31,460.60-18,798.24

Finding the Fourth Proportional to 20,875.88, 31,460.60 and 18,798.24

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Solution

The fourth proportional to 20,875.88, 31,460.60 and 18,798.24 is: 28,329.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,875.88 : 31,460.60 = 18,798.24 : x
  2. Step 2: Convert to fraction form
    20,875.88/31,460.60 = 18,798.24/x
  3. Step 3: Cross multiply
    20,875.88x = 31,460.60 × 18,798.24
  4. Step 4: Simplify right side
    20,875.88x = 591,403,909.34
  5. Step 5: Solve for x
    x = 591,403,909.34/20,875.88
  6. Step 6: Final answer
    x = 28,329.53

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.