Home / 12,561.89-18,840.40-6,320.23

Finding the Fourth Proportional to 12,561.89, 18,840.40 and 6,320.23

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Solution

The fourth proportional to 12,561.89, 18,840.40 and 6,320.23 is: 9,479.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,561.89 : 18,840.40 = 6,320.23 : x
  2. Step 2: Convert to fraction form
    12,561.89/18,840.40 = 6,320.23/x
  3. Step 3: Cross multiply
    12,561.89x = 18,840.40 × 6,320.23
  4. Step 4: Simplify right side
    12,561.89x = 119,075,598.39
  5. Step 5: Solve for x
    x = 119,075,598.39/12,561.89
  6. Step 6: Final answer
    x = 9,479.12

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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.