Home / 20,407.81-30,605.91-7,925.17

Finding the Fourth Proportional to 20,407.81, 30,605.91 and 7,925.17

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Solution

The fourth proportional to 20,407.81, 30,605.91 and 7,925.17 is: 11,885.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,407.81 : 30,605.91 = 7,925.17 : x
  2. Step 2: Convert to fraction form
    20,407.81/30,605.91 = 7,925.17/x
  3. Step 3: Cross multiply
    20,407.81x = 30,605.91 × 7,925.17
  4. Step 4: Simplify right side
    20,407.81x = 242,556,963.24
  5. Step 5: Solve for x
    x = 242,556,963.24/20,407.81
  6. Step 6: Final answer
    x = 11,885.50

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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.