Home / 20,689.99-31,034.93-7,536.98

Finding the Fourth Proportional to 20,689.99, 31,034.93 and 7,536.98

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Solution

The fourth proportional to 20,689.99, 31,034.93 and 7,536.98 is: 11,305.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,689.99 : 31,034.93 = 7,536.98 : x
  2. Step 2: Convert to fraction form
    20,689.99/31,034.93 = 7,536.98/x
  3. Step 3: Cross multiply
    20,689.99x = 31,034.93 × 7,536.98
  4. Step 4: Simplify right side
    20,689.99x = 233,909,646.71
  5. Step 5: Solve for x
    x = 233,909,646.71/20,689.99
  6. Step 6: Final answer
    x = 11,305.45

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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.