Home / 15,547,438.48-21,455,409-8,671,915.12

Finding the Fourth Proportional to 15,547,438.48, 21,455,409 and 8,671,915.12

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Solution

The fourth proportional to 15,547,438.48, 21,455,409 and 8,671,915.12 is: 11,967,211.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,547,438.48 : 21,455,409 = 8,671,915.12 : x
  2. Step 2: Convert to fraction form
    15,547,438.48/21,455,409 = 8,671,915.12/x
  3. Step 3: Cross multiply
    15,547,438.48x = 21,455,409 × 8,671,915.12
  4. Step 4: Simplify right side
    15,547,438.48x = 186,059,485,712,884.06
  5. Step 5: Solve for x
    x = 186,059,485,712,884.06/15,547,438.48
  6. Step 6: Final answer
    x = 11,967,211.57

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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.