Home / 12,560.85-18,844.38-8,870.31

Finding the Fourth Proportional to 12,560.85, 18,844.38 and 8,870.31

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Solution

The fourth proportional to 12,560.85, 18,844.38 and 8,870.31 is: 13,307.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,560.85 : 18,844.38 = 8,870.31 : x
  2. Step 2: Convert to fraction form
    12,560.85/18,844.38 = 8,870.31/x
  3. Step 3: Cross multiply
    12,560.85x = 18,844.38 × 8,870.31
  4. Step 4: Simplify right side
    12,560.85x = 167,155,492.36
  5. Step 5: Solve for x
    x = 167,155,492.36/12,560.85
  6. Step 6: Final answer
    x = 13,307.66

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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.