Home / 15,509,728.66-21,389,492.16-9,709,039.20

Finding the Fourth Proportional to 15,509,728.66, 21,389,492.16 and 9,709,039.20

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Solution

The fourth proportional to 15,509,728.66, 21,389,492.16 and 9,709,039.20 is: 13,389,751.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,509,728.66 : 21,389,492.16 = 9,709,039.20 : x
  2. Step 2: Convert to fraction form
    15,509,728.66/21,389,492.16 = 9,709,039.20/x
  3. Step 3: Cross multiply
    15,509,728.66x = 21,389,492.16 × 9,709,039.20
  4. Step 4: Simplify right side
    15,509,728.66x = 207,671,417,849,532.66
  5. Step 5: Solve for x
    x = 207,671,417,849,532.66/15,509,728.66
  6. Step 6: Final answer
    x = 13,389,751.84

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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.