Home / 14,155.16-21,235.50-5,389.40

Finding the Fourth Proportional to 14,155.16, 21,235.50 and 5,389.40

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Solution

The fourth proportional to 14,155.16, 21,235.50 and 5,389.40 is: 8,085.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,155.16 : 21,235.50 = 5,389.40 : x
  2. Step 2: Convert to fraction form
    14,155.16/21,235.50 = 5,389.40/x
  3. Step 3: Cross multiply
    14,155.16x = 21,235.50 × 5,389.40
  4. Step 4: Simplify right side
    14,155.16x = 114,446,603.70
  5. Step 5: Solve for x
    x = 114,446,603.70/14,155.16
  6. Step 6: Final answer
    x = 8,085.15

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.