Home / 15,140.70-20,904.46-9,477.74

Finding the Fourth Proportional to 15,140.70, 20,904.46 and 9,477.74

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Solution

The fourth proportional to 15,140.70, 20,904.46 and 9,477.74 is: 13,085.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,140.70 : 20,904.46 = 9,477.74 : x
  2. Step 2: Convert to fraction form
    15,140.70/20,904.46 = 9,477.74/x
  3. Step 3: Cross multiply
    15,140.70x = 20,904.46 × 9,477.74
  4. Step 4: Simplify right side
    15,140.70x = 198,127,065.29
  5. Step 5: Solve for x
    x = 198,127,065.29/15,140.70
  6. Step 6: Final answer
    x = 13,085.73

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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.