Home / 13,038.48-18,000.90-8,569.71

Finding the Fourth Proportional to 13,038.48, 18,000.90 and 8,569.71

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Solution

The fourth proportional to 13,038.48, 18,000.90 and 8,569.71 is: 11,831.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,038.48 : 18,000.90 = 8,569.71 : x
  2. Step 2: Convert to fraction form
    13,038.48/18,000.90 = 8,569.71/x
  3. Step 3: Cross multiply
    13,038.48x = 18,000.90 × 8,569.71
  4. Step 4: Simplify right side
    13,038.48x = 154,262,492.74
  5. Step 5: Solve for x
    x = 154,262,492.74/13,038.48
  6. Step 6: Final answer
    x = 11,831.32

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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.