Home / 19,864.34-27,421.36-13,153.22

Finding the Fourth Proportional to 19,864.34, 27,421.36 and 13,153.22

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Solution

The fourth proportional to 19,864.34, 27,421.36 and 13,153.22 is: 18,157.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,864.34 : 27,421.36 = 13,153.22 : x
  2. Step 2: Convert to fraction form
    19,864.34/27,421.36 = 13,153.22/x
  3. Step 3: Cross multiply
    19,864.34x = 27,421.36 × 13,153.22
  4. Step 4: Simplify right side
    19,864.34x = 360,679,180.78
  5. Step 5: Solve for x
    x = 360,679,180.78/19,864.34
  6. Step 6: Final answer
    x = 18,157.12

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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.