Home / 15,442.61-21,311.96-8,637.21

Finding the Fourth Proportional to 15,442.61, 21,311.96 and 8,637.21

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Solution

The fourth proportional to 15,442.61, 21,311.96 and 8,637.21 is: 11,920.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,442.61 : 21,311.96 = 8,637.21 : x
  2. Step 2: Convert to fraction form
    15,442.61/21,311.96 = 8,637.21/x
  3. Step 3: Cross multiply
    15,442.61x = 21,311.96 × 8,637.21
  4. Step 4: Simplify right side
    15,442.61x = 184,075,830.85
  5. Step 5: Solve for x
    x = 184,075,830.85/15,442.61
  6. Step 6: Final answer
    x = 11,920.00

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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.