Home / 15,128,936-20,877,931.68-9,696,428

Finding the Fourth Proportional to 15,128,936, 20,877,931.68 and 9,696,428

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Solution

The fourth proportional to 15,128,936, 20,877,931.68 and 9,696,428 is: 13,381,070.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,128,936 : 20,877,931.68 = 9,696,428 : x
  2. Step 2: Convert to fraction form
    15,128,936/20,877,931.68 = 9,696,428/x
  3. Step 3: Cross multiply
    15,128,936x = 20,877,931.68 × 9,696,428
  4. Step 4: Simplify right side
    15,128,936x = 202,441,361,324,039.03
  5. Step 5: Solve for x
    x = 202,441,361,324,039.03/15,128,936
  6. Step 6: Final answer
    x = 13,381,070.64

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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.