Home / 21,970.04-30,318.64-11,898.56

Finding the Fourth Proportional to 21,970.04, 30,318.64 and 11,898.56

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Solution

The fourth proportional to 21,970.04, 30,318.64 and 11,898.56 is: 16,420.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,970.04 : 30,318.64 = 11,898.56 : x
  2. Step 2: Convert to fraction form
    21,970.04/30,318.64 = 11,898.56/x
  3. Step 3: Cross multiply
    21,970.04x = 30,318.64 × 11,898.56
  4. Step 4: Simplify right side
    21,970.04x = 360,748,203.21
  5. Step 5: Solve for x
    x = 360,748,203.21/21,970.04
  6. Step 6: Final answer
    x = 16,420.01

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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.