Home / 22,599.90-31,188.12-12,528.57

Finding the Fourth Proportional to 22,599.90, 31,188.12 and 12,528.57

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Solution

The fourth proportional to 22,599.90, 31,188.12 and 12,528.57 is: 17,289.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,599.90 : 31,188.12 = 12,528.57 : x
  2. Step 2: Convert to fraction form
    22,599.90/31,188.12 = 12,528.57/x
  3. Step 3: Cross multiply
    22,599.90x = 31,188.12 × 12,528.57
  4. Step 4: Simplify right side
    22,599.90x = 390,742,544.59
  5. Step 5: Solve for x
    x = 390,742,544.59/22,599.90
  6. Step 6: Final answer
    x = 17,289.57

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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.