Home / 15,016.32-20,730.04-9,715.40

Finding the Fourth Proportional to 15,016.32, 20,730.04 and 9,715.40

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Solution

The fourth proportional to 15,016.32, 20,730.04 and 9,715.40 is: 13,412.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,016.32 : 20,730.04 = 9,715.40 : x
  2. Step 2: Convert to fraction form
    15,016.32/20,730.04 = 9,715.40/x
  3. Step 3: Cross multiply
    15,016.32x = 20,730.04 × 9,715.40
  4. Step 4: Simplify right side
    15,016.32x = 201,400,630.62
  5. Step 5: Solve for x
    x = 201,400,630.62/15,016.32
  6. Step 6: Final answer
    x = 13,412.12

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.