Home / 13,518,831.16-18,656,734.08-7,719,475.78

Finding the Fourth Proportional to 13,518,831.16, 18,656,734.08 and 7,719,475.78

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Solution

The fourth proportional to 13,518,831.16, 18,656,734.08 and 7,719,475.78 is: 10,653,303.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,518,831.16 : 18,656,734.08 = 7,719,475.78 : x
  2. Step 2: Convert to fraction form
    13,518,831.16/18,656,734.08 = 7,719,475.78/x
  3. Step 3: Cross multiply
    13,518,831.16x = 18,656,734.08 × 7,719,475.78
  4. Step 4: Simplify right side
    13,518,831.16x = 144,020,206,864,460.56
  5. Step 5: Solve for x
    x = 144,020,206,864,460.56/13,518,831.16
  6. Step 6: Final answer
    x = 10,653,303.17

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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.