Home / 13,721,923.20-18,937,416.96-7,612,320

Finding the Fourth Proportional to 13,721,923.20, 18,937,416.96 and 7,612,320

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Solution

The fourth proportional to 13,721,923.20, 18,937,416.96 and 7,612,320 is: 10,505,646.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,721,923.20 : 18,937,416.96 = 7,612,320 : x
  2. Step 2: Convert to fraction form
    13,721,923.20/18,937,416.96 = 7,612,320/x
  3. Step 3: Cross multiply
    13,721,923.20x = 18,937,416.96 × 7,612,320
  4. Step 4: Simplify right side
    13,721,923.20x = 144,157,677,872,947.22
  5. Step 5: Solve for x
    x = 144,157,677,872,947.22/13,721,923.20
  6. Step 6: Final answer
    x = 10,505,646.75

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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.