Home / 20,707.65-31,061.75-5,917.05

Finding the Fourth Proportional to 20,707.65, 31,061.75 and 5,917.05

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Solution

The fourth proportional to 20,707.65, 31,061.75 and 5,917.05 is: 8,875.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,707.65 : 31,061.75 = 5,917.05 : x
  2. Step 2: Convert to fraction form
    20,707.65/31,061.75 = 5,917.05/x
  3. Step 3: Cross multiply
    20,707.65x = 31,061.75 × 5,917.05
  4. Step 4: Simplify right side
    20,707.65x = 183,793,898.25
  5. Step 5: Solve for x
    x = 183,793,898.25/20,707.65
  6. Step 6: Final answer
    x = 8,875.65

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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.