Home / 10,900.40-16,354.95-4,980.08

Finding the Fourth Proportional to 10,900.40, 16,354.95 and 4,980.08

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Solution

The fourth proportional to 10,900.40, 16,354.95 and 4,980.08 is: 7,472.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,900.40 : 16,354.95 = 4,980.08 : x
  2. Step 2: Convert to fraction form
    10,900.40/16,354.95 = 4,980.08/x
  3. Step 3: Cross multiply
    10,900.40x = 16,354.95 × 4,980.08
  4. Step 4: Simplify right side
    10,900.40x = 81,448,959.40
  5. Step 5: Solve for x
    x = 81,448,959.40/10,900.40
  6. Step 6: Final answer
    x = 7,472.11

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.