Home / 13,809.06-19,051.79-8,430.05

Finding the Fourth Proportional to 13,809.06, 19,051.79 and 8,430.05

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Solution

The fourth proportional to 13,809.06, 19,051.79 and 8,430.05 is: 11,630.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,809.06 : 19,051.79 = 8,430.05 : x
  2. Step 2: Convert to fraction form
    13,809.06/19,051.79 = 8,430.05/x
  3. Step 3: Cross multiply
    13,809.06x = 19,051.79 × 8,430.05
  4. Step 4: Simplify right side
    13,809.06x = 160,607,547.77
  5. Step 5: Solve for x
    x = 160,607,547.77/13,809.06
  6. Step 6: Final answer
    x = 11,630.59

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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.