Home / 21,271.29-29,341.47-13,306.96

Finding the Fourth Proportional to 21,271.29, 29,341.47 and 13,306.96

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Solution

The fourth proportional to 21,271.29, 29,341.47 and 13,306.96 is: 18,355.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,271.29 : 29,341.47 = 13,306.96 : x
  2. Step 2: Convert to fraction form
    21,271.29/29,341.47 = 13,306.96/x
  3. Step 3: Cross multiply
    21,271.29x = 29,341.47 × 13,306.96
  4. Step 4: Simplify right side
    21,271.29x = 390,445,767.63
  5. Step 5: Solve for x
    x = 390,445,767.63/21,271.29
  6. Step 6: Final answer
    x = 18,355.53

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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.