Home / 20,508.03-28,295.87-12,547.35

Finding the Fourth Proportional to 20,508.03, 28,295.87 and 12,547.35

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Solution

The fourth proportional to 20,508.03, 28,295.87 and 12,547.35 is: 17,312.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,508.03 : 28,295.87 = 12,547.35 : x
  2. Step 2: Convert to fraction form
    20,508.03/28,295.87 = 12,547.35/x
  3. Step 3: Cross multiply
    20,508.03x = 28,295.87 × 12,547.35
  4. Step 4: Simplify right side
    20,508.03x = 355,038,121.71
  5. Step 5: Solve for x
    x = 355,038,121.71/20,508.03
  6. Step 6: Final answer
    x = 17,312.15

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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.