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Finding the Fourth Proportional to 13,703.16, 18,913.32 and 8,929.08

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Solution

The fourth proportional to 13,703.16, 18,913.32 and 8,929.08 is: 12,324.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,703.16 : 18,913.32 = 8,929.08 : x
  2. Step 2: Convert to fraction form
    13,703.16/18,913.32 = 8,929.08/x
  3. Step 3: Cross multiply
    13,703.16x = 18,913.32 × 8,929.08
  4. Step 4: Simplify right side
    13,703.16x = 168,878,547.35
  5. Step 5: Solve for x
    x = 168,878,547.35/13,703.16
  6. Step 6: Final answer
    x = 12,324.06

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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.