Home / 15,607.60-21,538.80-8,534.32

Finding the Fourth Proportional to 15,607.60, 21,538.80 and 8,534.32

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Solution

The fourth proportional to 15,607.60, 21,538.80 and 8,534.32 is: 11,777.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,607.60 : 21,538.80 = 8,534.32 : x
  2. Step 2: Convert to fraction form
    15,607.60/21,538.80 = 8,534.32/x
  3. Step 3: Cross multiply
    15,607.60x = 21,538.80 × 8,534.32
  4. Step 4: Simplify right side
    15,607.60x = 183,819,011.62
  5. Step 5: Solve for x
    x = 183,819,011.62/15,607.60
  6. Step 6: Final answer
    x = 11,777.53

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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.