Home / 13,320,289.56-18,381,999.40-7,208,718.06

Finding the Fourth Proportional to 13,320,289.56, 18,381,999.40 and 7,208,718.06

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Solution

The fourth proportional to 13,320,289.56, 18,381,999.40 and 7,208,718.06 is: 9,948,030.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,320,289.56 : 18,381,999.40 = 7,208,718.06 : x
  2. Step 2: Convert to fraction form
    13,320,289.56/18,381,999.40 = 7,208,718.06/x
  3. Step 3: Cross multiply
    13,320,289.56x = 18,381,999.40 × 7,208,718.06
  4. Step 4: Simplify right side
    13,320,289.56x = 132,510,651,053,689.14
  5. Step 5: Solve for x
    x = 132,510,651,053,689.14/13,320,289.56
  6. Step 6: Final answer
    x = 9,948,030.82

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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.