Home / 15,444.54-21,312.89-8,370.81

Finding the Fourth Proportional to 15,444.54, 21,312.89 and 8,370.81

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Solution

The fourth proportional to 15,444.54, 21,312.89 and 8,370.81 is: 11,551.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,444.54 : 21,312.89 = 8,370.81 : x
  2. Step 2: Convert to fraction form
    15,444.54/21,312.89 = 8,370.81/x
  3. Step 3: Cross multiply
    15,444.54x = 21,312.89 × 8,370.81
  4. Step 4: Simplify right side
    15,444.54x = 178,406,173.67
  5. Step 5: Solve for x
    x = 178,406,173.67/15,444.54
  6. Step 6: Final answer
    x = 11,551.41

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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.