Home / 14,785.31-20,403.58-9,117.79

Finding the Fourth Proportional to 14,785.31, 20,403.58 and 9,117.79

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Solution

The fourth proportional to 14,785.31, 20,403.58 and 9,117.79 is: 12,582.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,785.31 : 20,403.58 = 9,117.79 : x
  2. Step 2: Convert to fraction form
    14,785.31/20,403.58 = 9,117.79/x
  3. Step 3: Cross multiply
    14,785.31x = 20,403.58 × 9,117.79
  4. Step 4: Simplify right side
    14,785.31x = 186,035,472.29
  5. Step 5: Solve for x
    x = 186,035,472.29/14,785.31
  6. Step 6: Final answer
    x = 12,582.46

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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.