Home / 15,555.50-21,466.59-9,966.50

Finding the Fourth Proportional to 15,555.50, 21,466.59 and 9,966.50

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Solution

The fourth proportional to 15,555.50, 21,466.59 and 9,966.50 is: 13,753.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,555.50 : 21,466.59 = 9,966.50 : x
  2. Step 2: Convert to fraction form
    15,555.50/21,466.59 = 9,966.50/x
  3. Step 3: Cross multiply
    15,555.50x = 21,466.59 × 9,966.50
  4. Step 4: Simplify right side
    15,555.50x = 213,946,769.24
  5. Step 5: Solve for x
    x = 213,946,769.24/15,555.50
  6. Step 6: Final answer
    x = 13,753.77

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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.