Home / 15,581.48-21,501.62-8,507.80

Finding the Fourth Proportional to 15,581.48, 21,501.62 and 8,507.80

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Solution

The fourth proportional to 15,581.48, 21,501.62 and 8,507.80 is: 11,740.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,581.48 : 21,501.62 = 8,507.80 : x
  2. Step 2: Convert to fraction form
    15,581.48/21,501.62 = 8,507.80/x
  3. Step 3: Cross multiply
    15,581.48x = 21,501.62 × 8,507.80
  4. Step 4: Simplify right side
    15,581.48x = 182,931,482.64
  5. Step 5: Solve for x
    x = 182,931,482.64/15,581.48
  6. Step 6: Final answer
    x = 11,740.31

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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.