Home / 19,386.24-29,085.76-8,990.40

Finding the Fourth Proportional to 19,386.24, 29,085.76 and 8,990.40

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Solution

The fourth proportional to 19,386.24, 29,085.76 and 8,990.40 is: 13,488.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,386.24 : 29,085.76 = 8,990.40 : x
  2. Step 2: Convert to fraction form
    19,386.24/29,085.76 = 8,990.40/x
  3. Step 3: Cross multiply
    19,386.24x = 29,085.76 × 8,990.40
  4. Step 4: Simplify right side
    19,386.24x = 261,492,616.70
  5. Step 5: Solve for x
    x = 261,492,616.70/19,386.24
  6. Step 6: Final answer
    x = 13,488.57

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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.