Home / 15,506.13-21,398.40-8,432.67

Finding the Fourth Proportional to 15,506.13, 21,398.40 and 8,432.67

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Solution

The fourth proportional to 15,506.13, 21,398.40 and 8,432.67 is: 11,637.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,506.13 : 21,398.40 = 8,432.67 : x
  2. Step 2: Convert to fraction form
    15,506.13/21,398.40 = 8,432.67/x
  3. Step 3: Cross multiply
    15,506.13x = 21,398.40 × 8,432.67
  4. Step 4: Simplify right side
    15,506.13x = 180,445,645.73
  5. Step 5: Solve for x
    x = 180,445,645.73/15,506.13
  6. Step 6: Final answer
    x = 11,637.05

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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.