Home / 15,355.80-21,191.76-8,641.08

Finding the Fourth Proportional to 15,355.80, 21,191.76 and 8,641.08

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Solution

The fourth proportional to 15,355.80, 21,191.76 and 8,641.08 is: 11,925.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,355.80 : 21,191.76 = 8,641.08 : x
  2. Step 2: Convert to fraction form
    15,355.80/21,191.76 = 8,641.08/x
  3. Step 3: Cross multiply
    15,355.80x = 21,191.76 × 8,641.08
  4. Step 4: Simplify right side
    15,355.80x = 183,119,693.50
  5. Step 5: Solve for x
    x = 183,119,693.50/15,355.80
  6. Step 6: Final answer
    x = 11,925.12

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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.