Home / 28,307.76-42,471.36-10,780.20

Finding the Fourth Proportional to 28,307.76, 42,471.36 and 10,780.20

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Solution

The fourth proportional to 28,307.76, 42,471.36 and 10,780.20 is: 16,174.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,307.76 : 42,471.36 = 10,780.20 : x
  2. Step 2: Convert to fraction form
    28,307.76/42,471.36 = 10,780.20/x
  3. Step 3: Cross multiply
    28,307.76x = 42,471.36 × 10,780.20
  4. Step 4: Simplify right side
    28,307.76x = 457,849,755.07
  5. Step 5: Solve for x
    x = 457,849,755.07/28,307.76
  6. Step 6: Final answer
    x = 16,174.00

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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.