Home / 15,783.10-21,780.48-9,068.19

Finding the Fourth Proportional to 15,783.10, 21,780.48 and 9,068.19

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Solution

The fourth proportional to 15,783.10, 21,780.48 and 9,068.19 is: 12,514.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,783.10 : 21,780.48 = 9,068.19 : x
  2. Step 2: Convert to fraction form
    15,783.10/21,780.48 = 9,068.19/x
  3. Step 3: Cross multiply
    15,783.10x = 21,780.48 × 9,068.19
  4. Step 4: Simplify right side
    15,783.10x = 197,509,602.62
  5. Step 5: Solve for x
    x = 197,509,602.62/15,783.10
  6. Step 6: Final answer
    x = 12,514.00

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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.