Home / 21,266.67-29,347.59-13,313.28

Finding the Fourth Proportional to 21,266.67, 29,347.59 and 13,313.28

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Solution

The fourth proportional to 21,266.67, 29,347.59 and 13,313.28 is: 18,372.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,266.67 : 29,347.59 = 13,313.28 : x
  2. Step 2: Convert to fraction form
    21,266.67/29,347.59 = 13,313.28/x
  3. Step 3: Cross multiply
    21,266.67x = 29,347.59 × 13,313.28
  4. Step 4: Simplify right side
    21,266.67x = 390,712,683.00
  5. Step 5: Solve for x
    x = 390,712,683.00/21,266.67
  6. Step 6: Final answer
    x = 18,372.07

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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.