Home / 14,865.12-20,509.20-9,279.36

Finding the Fourth Proportional to 14,865.12, 20,509.20 and 9,279.36

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Solution

The fourth proportional to 14,865.12, 20,509.20 and 9,279.36 is: 12,802.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,865.12 : 20,509.20 = 9,279.36 : x
  2. Step 2: Convert to fraction form
    14,865.12/20,509.20 = 9,279.36/x
  3. Step 3: Cross multiply
    14,865.12x = 20,509.20 × 9,279.36
  4. Step 4: Simplify right side
    14,865.12x = 190,312,250.11
  5. Step 5: Solve for x
    x = 190,312,250.11/14,865.12
  6. Step 6: Final answer
    x = 12,802.60

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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.