Home / 15,547.34-21,423.49-14,709.80

Finding the Fourth Proportional to 15,547.34, 21,423.49 and 14,709.80

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Solution

The fourth proportional to 15,547.34, 21,423.49 and 14,709.80 is: 20,269.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,547.34 : 21,423.49 = 14,709.80 : x
  2. Step 2: Convert to fraction form
    15,547.34/21,423.49 = 14,709.80/x
  3. Step 3: Cross multiply
    15,547.34x = 21,423.49 × 14,709.80
  4. Step 4: Simplify right side
    15,547.34x = 315,135,269.99
  5. Step 5: Solve for x
    x = 315,135,269.99/15,547.34
  6. Step 6: Final answer
    x = 20,269.40

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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.