Home / 30,438.26-45,678.58-10,718.40

Finding the Fourth Proportional to 30,438.26, 45,678.58 and 10,718.40

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Solution

The fourth proportional to 30,438.26, 45,678.58 and 10,718.40 is: 16,085.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,438.26 : 45,678.58 = 10,718.40 : x
  2. Step 2: Convert to fraction form
    30,438.26/45,678.58 = 10,718.40/x
  3. Step 3: Cross multiply
    30,438.26x = 45,678.58 × 10,718.40
  4. Step 4: Simplify right side
    30,438.26x = 489,601,419.47
  5. Step 5: Solve for x
    x = 489,601,419.47/30,438.26
  6. Step 6: Final answer
    x = 16,085.07

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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.