Home / 15,612.92-21,547.32-8,900.20

Finding the Fourth Proportional to 15,612.92, 21,547.32 and 8,900.20

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Solution

The fourth proportional to 15,612.92, 21,547.32 and 8,900.20 is: 12,283.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,612.92 : 21,547.32 = 8,900.20 : x
  2. Step 2: Convert to fraction form
    15,612.92/21,547.32 = 8,900.20/x
  3. Step 3: Cross multiply
    15,612.92x = 21,547.32 × 8,900.20
  4. Step 4: Simplify right side
    15,612.92x = 191,775,457.46
  5. Step 5: Solve for x
    x = 191,775,457.46/15,612.92
  6. Step 6: Final answer
    x = 12,283.13

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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.