Home / 20,967.48-31,451.54-5,384.76

Finding the Fourth Proportional to 20,967.48, 31,451.54 and 5,384.76

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Solution

The fourth proportional to 20,967.48, 31,451.54 and 5,384.76 is: 8,077.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,967.48 : 31,451.54 = 5,384.76 : x
  2. Step 2: Convert to fraction form
    20,967.48/31,451.54 = 5,384.76/x
  3. Step 3: Cross multiply
    20,967.48x = 31,451.54 × 5,384.76
  4. Step 4: Simplify right side
    20,967.48x = 169,358,994.53
  5. Step 5: Solve for x
    x = 169,358,994.53/20,967.48
  6. Step 6: Final answer
    x = 8,077.22

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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.