Home / 15,378.32-23,070.72-4,989.68

Finding the Fourth Proportional to 15,378.32, 23,070.72 and 4,989.68

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Solution

The fourth proportional to 15,378.32, 23,070.72 and 4,989.68 is: 7,485.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,378.32 : 23,070.72 = 4,989.68 : x
  2. Step 2: Convert to fraction form
    15,378.32/23,070.72 = 4,989.68/x
  3. Step 3: Cross multiply
    15,378.32x = 23,070.72 × 4,989.68
  4. Step 4: Simplify right side
    15,378.32x = 115,115,510.17
  5. Step 5: Solve for x
    x = 115,115,510.17/15,378.32
  6. Step 6: Final answer
    x = 7,485.57

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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.