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Finding the Fourth Proportional to 15,602.50, 21,521.32 and 10,506.79

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Solution

The fourth proportional to 15,602.50, 21,521.32 and 10,506.79 is: 14,492.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,602.50 : 21,521.32 = 10,506.79 : x
  2. Step 2: Convert to fraction form
    15,602.50/21,521.32 = 10,506.79/x
  3. Step 3: Cross multiply
    15,602.50x = 21,521.32 × 10,506.79
  4. Step 4: Simplify right side
    15,602.50x = 226,119,989.76
  5. Step 5: Solve for x
    x = 226,119,989.76/15,602.50
  6. Step 6: Final answer
    x = 14,492.55

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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.