Home / 14,870.34-20,521.66-8,156.21

Finding the Fourth Proportional to 14,870.34, 20,521.66 and 8,156.21

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Solution

The fourth proportional to 14,870.34, 20,521.66 and 8,156.21 is: 11,255.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,870.34 : 20,521.66 = 8,156.21 : x
  2. Step 2: Convert to fraction form
    14,870.34/20,521.66 = 8,156.21/x
  3. Step 3: Cross multiply
    14,870.34x = 20,521.66 × 8,156.21
  4. Step 4: Simplify right side
    14,870.34x = 167,378,968.51
  5. Step 5: Solve for x
    x = 167,378,968.51/14,870.34
  6. Step 6: Final answer
    x = 11,255.89

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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.