Home / 15,369.34-21,165.06-13,351.84

Finding the Fourth Proportional to 15,369.34, 21,165.06 and 13,351.84

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Solution

The fourth proportional to 15,369.34, 21,165.06 and 13,351.84 is: 18,386.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,369.34 : 21,165.06 = 13,351.84 : x
  2. Step 2: Convert to fraction form
    15,369.34/21,165.06 = 13,351.84/x
  3. Step 3: Cross multiply
    15,369.34x = 21,165.06 × 13,351.84
  4. Step 4: Simplify right side
    15,369.34x = 282,592,494.71
  5. Step 5: Solve for x
    x = 282,592,494.71/15,369.34
  6. Step 6: Final answer
    x = 18,386.77

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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.