Home / 15,455.60-21,328.48-8,740.98

Finding the Fourth Proportional to 15,455.60, 21,328.48 and 8,740.98

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Solution

The fourth proportional to 15,455.60, 21,328.48 and 8,740.98 is: 12,062.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,455.60 : 21,328.48 = 8,740.98 : x
  2. Step 2: Convert to fraction form
    15,455.60/21,328.48 = 8,740.98/x
  3. Step 3: Cross multiply
    15,455.60x = 21,328.48 × 8,740.98
  4. Step 4: Simplify right side
    15,455.60x = 186,431,666.76
  5. Step 5: Solve for x
    x = 186,431,666.76/15,455.60
  6. Step 6: Final answer
    x = 12,062.40

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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.