Home / 42,989.19-64,490.24-13,409.34

Finding the Fourth Proportional to 42,989.19, 64,490.24 and 13,409.34

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Solution

The fourth proportional to 42,989.19, 64,490.24 and 13,409.34 is: 20,116.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,989.19 : 64,490.24 = 13,409.34 : x
  2. Step 2: Convert to fraction form
    42,989.19/64,490.24 = 13,409.34/x
  3. Step 3: Cross multiply
    42,989.19x = 64,490.24 × 13,409.34
  4. Step 4: Simplify right side
    42,989.19x = 864,771,554.84
  5. Step 5: Solve for x
    x = 864,771,554.84/42,989.19
  6. Step 6: Final answer
    x = 20,116.02

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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.