Home / 15,813.95-21,823.55-8,740.22

Finding the Fourth Proportional to 15,813.95, 21,823.55 and 8,740.22

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Solution

The fourth proportional to 15,813.95, 21,823.55 and 8,740.22 is: 12,061.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,813.95 : 21,823.55 = 8,740.22 : x
  2. Step 2: Convert to fraction form
    15,813.95/21,823.55 = 8,740.22/x
  3. Step 3: Cross multiply
    15,813.95x = 21,823.55 × 8,740.22
  4. Step 4: Simplify right side
    15,813.95x = 190,742,475.36
  5. Step 5: Solve for x
    x = 190,742,475.36/15,813.95
  6. Step 6: Final answer
    x = 12,061.66

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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.