Home / 21,420.36-29,574.18-13,051.08

Finding the Fourth Proportional to 21,420.36, 29,574.18 and 13,051.08

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Solution

The fourth proportional to 21,420.36, 29,574.18 and 13,051.08 is: 18,019.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,420.36 : 29,574.18 = 13,051.08 : x
  2. Step 2: Convert to fraction form
    21,420.36/29,574.18 = 13,051.08/x
  3. Step 3: Cross multiply
    21,420.36x = 29,574.18 × 13,051.08
  4. Step 4: Simplify right side
    21,420.36x = 385,974,989.11
  5. Step 5: Solve for x
    x = 385,974,989.11/21,420.36
  6. Step 6: Final answer
    x = 18,019.07

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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.