Home / 15,387.57-23,085-6,620.13

Finding the Fourth Proportional to 15,387.57, 23,085 and 6,620.13

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Solution

The fourth proportional to 15,387.57, 23,085 and 6,620.13 is: 9,931.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,387.57 : 23,085 = 6,620.13 : x
  2. Step 2: Convert to fraction form
    15,387.57/23,085 = 6,620.13/x
  3. Step 3: Cross multiply
    15,387.57x = 23,085 × 6,620.13
  4. Step 4: Simplify right side
    15,387.57x = 152,825,701.05
  5. Step 5: Solve for x
    x = 152,825,701.05/15,387.57
  6. Step 6: Final answer
    x = 9,931.76

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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.