Home / 28,075,139.81-38,742,979.16-15,685,326.28

Finding the Fourth Proportional to 28,075,139.81, 38,742,979.16 and 15,685,326.28

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Solution

The fourth proportional to 28,075,139.81, 38,742,979.16 and 15,685,326.28 is: 21,645,351.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,075,139.81 : 38,742,979.16 = 15,685,326.28 : x
  2. Step 2: Convert to fraction form
    28,075,139.81/38,742,979.16 = 15,685,326.28/x
  3. Step 3: Cross multiply
    28,075,139.81x = 38,742,979.16 × 15,685,326.28
  4. Step 4: Simplify right side
    28,075,139.81x = 607,696,269,271,482.38
  5. Step 5: Solve for x
    x = 607,696,269,271,482.38/28,075,139.81
  6. Step 6: Final answer
    x = 21,645,351.49

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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.