Home / 21,130.04-29,159.90-11,570.33

Finding the Fourth Proportional to 21,130.04, 29,159.90 and 11,570.33

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Solution

The fourth proportional to 21,130.04, 29,159.90 and 11,570.33 is: 15,967.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,130.04 : 29,159.90 = 11,570.33 : x
  2. Step 2: Convert to fraction form
    21,130.04/29,159.90 = 11,570.33/x
  3. Step 3: Cross multiply
    21,130.04x = 29,159.90 × 11,570.33
  4. Step 4: Simplify right side
    21,130.04x = 337,389,665.77
  5. Step 5: Solve for x
    x = 337,389,665.77/21,130.04
  6. Step 6: Final answer
    x = 15,967.30

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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.