Home / 21,513,792.05-29,688,278.95-11,724,036.47

Finding the Fourth Proportional to 21,513,792.05, 29,688,278.95 and 11,724,036.47

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Solution

The fourth proportional to 21,513,792.05, 29,688,278.95 and 11,724,036.47 is: 16,178,759.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,513,792.05 : 29,688,278.95 = 11,724,036.47 : x
  2. Step 2: Convert to fraction form
    21,513,792.05/29,688,278.95 = 11,724,036.47/x
  3. Step 3: Cross multiply
    21,513,792.05x = 29,688,278.95 × 11,724,036.47
  4. Step 4: Simplify right side
    21,513,792.05x = 348,066,465,082,713.12
  5. Step 5: Solve for x
    x = 348,066,465,082,713.12/21,513,792.05
  6. Step 6: Final answer
    x = 16,178,759.39

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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.