Home / 15,007.78-20,711.46-9,041.32

Finding the Fourth Proportional to 15,007.78, 20,711.46 and 9,041.32

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Solution

The fourth proportional to 15,007.78, 20,711.46 and 9,041.32 is: 12,477.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,007.78 : 20,711.46 = 9,041.32 : x
  2. Step 2: Convert to fraction form
    15,007.78/20,711.46 = 9,041.32/x
  3. Step 3: Cross multiply
    15,007.78x = 20,711.46 × 9,041.32
  4. Step 4: Simplify right side
    15,007.78x = 187,258,937.53
  5. Step 5: Solve for x
    x = 187,258,937.53/15,007.78
  6. Step 6: Final answer
    x = 12,477.46

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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.