Home / 13,286,272.16-18,335,444.18-7,779,131.76

Finding the Fourth Proportional to 13,286,272.16, 18,335,444.18 and 7,779,131.76

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Solution

The fourth proportional to 13,286,272.16, 18,335,444.18 and 7,779,131.76 is: 10,735,429.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,286,272.16 : 18,335,444.18 = 7,779,131.76 : x
  2. Step 2: Convert to fraction form
    13,286,272.16/18,335,444.18 = 7,779,131.76/x
  3. Step 3: Cross multiply
    13,286,272.16x = 18,335,444.18 × 7,779,131.76
  4. Step 4: Simplify right side
    13,286,272.16x = 142,633,836,154,345.16
  5. Step 5: Solve for x
    x = 142,633,836,154,345.16/13,286,272.16
  6. Step 6: Final answer
    x = 10,735,429.35

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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.