Home / 28,359.10-42,517.79-14,312.28

Finding the Fourth Proportional to 28,359.10, 42,517.79 and 14,312.28

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Solution

The fourth proportional to 28,359.10, 42,517.79 and 14,312.28 is: 21,457.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,359.10 : 42,517.79 = 14,312.28 : x
  2. Step 2: Convert to fraction form
    28,359.10/42,517.79 = 14,312.28/x
  3. Step 3: Cross multiply
    28,359.10x = 42,517.79 × 14,312.28
  4. Step 4: Simplify right side
    28,359.10x = 608,526,515.46
  5. Step 5: Solve for x
    x = 608,526,515.46/28,359.10
  6. Step 6: Final answer
    x = 21,457.89

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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.