Home / 20,873.04-28,832.40-15,558.63

Finding the Fourth Proportional to 20,873.04, 28,832.40 and 15,558.63

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Solution

The fourth proportional to 20,873.04, 28,832.40 and 15,558.63 is: 21,491.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,873.04 : 28,832.40 = 15,558.63 : x
  2. Step 2: Convert to fraction form
    20,873.04/28,832.40 = 15,558.63/x
  3. Step 3: Cross multiply
    20,873.04x = 28,832.40 × 15,558.63
  4. Step 4: Simplify right side
    20,873.04x = 448,592,643.61
  5. Step 5: Solve for x
    x = 448,592,643.61/20,873.04
  6. Step 6: Final answer
    x = 21,491.49

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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.