Home / 15,282.16-21,089.30-8,567.78

Finding the Fourth Proportional to 15,282.16, 21,089.30 and 8,567.78

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Solution

The fourth proportional to 15,282.16, 21,089.30 and 8,567.78 is: 11,823.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,282.16 : 21,089.30 = 8,567.78 : x
  2. Step 2: Convert to fraction form
    15,282.16/21,089.30 = 8,567.78/x
  3. Step 3: Cross multiply
    15,282.16x = 21,089.30 × 8,567.78
  4. Step 4: Simplify right side
    15,282.16x = 180,688,482.75
  5. Step 5: Solve for x
    x = 180,688,482.75/15,282.16
  6. Step 6: Final answer
    x = 11,823.49

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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.