Home / 15,547,985.28-21,457,180.80-8,578,628.64

Finding the Fourth Proportional to 15,547,985.28, 21,457,180.80 and 8,578,628.64

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Solution

The fourth proportional to 15,547,985.28, 21,457,180.80 and 8,578,628.64 is: 11,839,037.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,547,985.28 : 21,457,180.80 = 8,578,628.64 : x
  2. Step 2: Convert to fraction form
    15,547,985.28/21,457,180.80 = 8,578,628.64/x
  3. Step 3: Cross multiply
    15,547,985.28x = 21,457,180.80 × 8,578,628.64
  4. Step 4: Simplify right side
    15,547,985.28x = 184,073,185,744,538.12
  5. Step 5: Solve for x
    x = 184,073,185,744,538.12/15,547,985.28
  6. Step 6: Final answer
    x = 11,839,037.82

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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.