Home / 15,354.60-21,187.63-8,642.53

Finding the Fourth Proportional to 15,354.60, 21,187.63 and 8,642.53

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Solution

The fourth proportional to 15,354.60, 21,187.63 and 8,642.53 is: 11,925.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,354.60 : 21,187.63 = 8,642.53 : x
  2. Step 2: Convert to fraction form
    15,354.60/21,187.63 = 8,642.53/x
  3. Step 3: Cross multiply
    15,354.60x = 21,187.63 × 8,642.53
  4. Step 4: Simplify right side
    15,354.60x = 183,114,716.58
  5. Step 5: Solve for x
    x = 183,114,716.58/15,354.60
  6. Step 6: Final answer
    x = 11,925.73

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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.