Home / 15,730.32-21,707.46-9,019.86

Finding the Fourth Proportional to 15,730.32, 21,707.46 and 9,019.86

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Solution

The fourth proportional to 15,730.32, 21,707.46 and 9,019.86 is: 12,447.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,730.32 : 21,707.46 = 9,019.86 : x
  2. Step 2: Convert to fraction form
    15,730.32/21,707.46 = 9,019.86/x
  3. Step 3: Cross multiply
    15,730.32x = 21,707.46 × 9,019.86
  4. Step 4: Simplify right side
    15,730.32x = 195,798,250.16
  5. Step 5: Solve for x
    x = 195,798,250.16/15,730.32
  6. Step 6: Final answer
    x = 12,447.19

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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.