Home / 20,687.99-31,031.93-7,534.98

Finding the Fourth Proportional to 20,687.99, 31,031.93 and 7,534.98

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Solution

The fourth proportional to 20,687.99, 31,031.93 and 7,534.98 is: 11,302.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,687.99 : 31,031.93 = 7,534.98 : x
  2. Step 2: Convert to fraction form
    20,687.99/31,031.93 = 7,534.98/x
  3. Step 3: Cross multiply
    20,687.99x = 31,031.93 × 7,534.98
  4. Step 4: Simplify right side
    20,687.99x = 233,824,990.75
  5. Step 5: Solve for x
    x = 233,824,990.75/20,687.99
  6. Step 6: Final answer
    x = 11,302.45

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.